Answer:
AB = 30 inch
BC = 14 inch or BC = 50 inch
Step-by-step explanation:
Make a drawing. Please see the attachment. All measurements are in inches.
Consider the two triangles:
∆ ABC and ∆ AB'C
1. Looking only at ∆ ABC. Since this is not a rectangular triangle, let's first consider ∆ ANC, so we can calculate NC.
AN is the height and there fore is perpendicular to NC and thus also to BC.
In ∆ ANC
AN² + NC² = AC²
We want to calculate NC, so:
NC² = AC² - AN²
Given: AC = 40 and AN = 24
NC² = 40² + 24²
NC² = 1600 + 576
NC² = 1024
NC = +-SQRT(1024)
NC = 32
NC = NB + BC
We want to know BC
BC = NC - NB
Given: NB = BN = 18 and we just calculated NC to be 32 so...
BC = 32 - 18
BC = 14
2. Looking only at ∆ AB'C
AN is the height and there fore is perpendicular to B'C. Let's consider ∆ AB'N, so we can calculate AB'.
AN is the height and there fore is perpendicular to B'N, which means it has an angle of 90° in ∆ AB'N.
In ∆ AB'N
c² = a² + b²
AB'² = AN² + B'N²
Given: AN = 24 and B'N = 18
AB'² = 24² + 18²
AB'² = 576 + 324
AB'² = 900
AB' = +-SQRT(900)
AB' = 30
In ∆ AB'C
with AB' = 30 and AC = 40
c² = a² + b²
B'C² = AB'² + AC²
B'C² = 30² + 40²
B'C² = 900 + 1600
B'C² = 2500
B'C = +-SQRT(2500)
B'C = 50
Now we have our answers.
Extra:
Please look at the picture again, but now concentrate on the indicated 50 and - 50...
I am trying to explain something about the meaning of the outcome of mathematical calculations like:
c² = 2500
c = +- SQRT(2500)
c = 50 or c = - 50
Depending on where you want to start from, you can "move" 50 inch in one direction or 50 inch in the opposite direction, hence the -50 inch. Please let me explain why I am making a fuss...
1). Let's consider ∆ AB'C. Going from B' to C, you "move" -50 inch form B' towards C. This 50 inch is what we calculated earlier, but the we neglected to explain why we discarded the minus value of the SQRT... We just stated it to be only the positive value! Normally we give no meaning to the negative variant of it... Well, is this true in this case?
2). Let's consider ∆ ABC'. Going from B to C', you "move" 50 inch form B towards C'. Please understand that the direction is opposite that of - 50 inch in 1).
It is important to understand that a negative sign means the 180° in the direction of the other way.
In general. When calculating a square side by using the SQRT, you carefully need to consider if you can discard the -
minus value of your calculated outcome.
Not always, but usually there is some sort of meaning to the negative part of the SQRT, you just need to be willing to understand what it possibly could mean.
I hope this has made some sense to you :-).
Please show step by step how to solve the problem in Excel with the formula and not in Excel.
1.) Kate wants to purchase a car for $505.76 monthly payments for the next 5 years. Kate qualifies for a 4.3% loan. How much does the car cost?
Answer: 27,261
Use Excel to find PV (present value) of these monthly payments.
Excel PV formula: =PV(rate,nper,pmt,fv)
Use the number of monthly payments (years *12) for the nper and the monthly interest rate (rate/12).
Please show step by step how to solve the problem in Excel with the formula and not in Excel.
Answer: 437
2.) M wants to buy a used car for $23,099. If M wants to pay it off in 5 years, how much will she have to pay each month with an annual interest rate of 5.1%? Post answer as a positive amount.
PVOA = PMT x [1 - (1 /(1 + k)n ) / k] x ( 1 + k)
or use the PMT function in Excel. =PMT(rate,nper,pv,fv)
Remember for monthly payments, the nper = years * 12 and the annual interest rate must be divided by 12.
Thank you.
Problem 1
PMT = 505.76 = monthly payment
k = monthly interest rate in decimal form
k = 0.043/12 = 0.003583333 (approximate)
n = 5*12 = 60 months
PVOA = present value of ordinary annuity
PVOA = PMT * ( 1 - (1+k)^(-n) )/k
PVOA = 505.76 * ( 1 - (1+0.003583333)^(-60) )/0.003583333
PVOA = 27,261.436358296
When rounding to the nearest dollar, we get $27,261
Your teacher made a mistake in choosing the formula. S/he mixed up present value ordinary annuity with annuity due. The (1+k) portion at the end is ignored. I rewrote the 1/( (1+k)^n ) sub-portion as (1+k)^(-n) to avoid a bit of clutter.
--------
To type this into excel we will write
=PV(0.043/12,5*12,505.76,0,0)
That will produce the result of -27,261.44. The negative is to indicate a cash outflow.
Don't forget about the equal sign up front when writing excel formulas.
=====================================================
Problem 2
L = loan amount = 23099
k = interest rate per month = 0.051/12 = 0.00425 exactly
n = number of months = 5*12 = 60 months
PMT = monthly payment
PMT = (Lk)/(1 - (1 + k)^(-n) )
This formula is the result of solving PVOA = PMT * ( 1 - (1+k)^(-n) )/k for "PMT". The PVOA value is the loan amount in this case.
Let's plug in the values mentioned
PMT = (Lk)/(1 - (1 + k)^(-n) )
PMT = (23099*0.00425)/(1 - (1 + 0.00425)^(-60) )
PMT = 436.965684557303
PMT = 437 when rounding to the nearest whole number
--------
To do this in excel, we type in
=PMT(0.051/12,5*12,23099,0,0)
The output should be -436.97 which rounds to -437.
The value is negative to represent a cash outflow, but your teacher mentions to post the answer as a positive value.
could you help me by chance?
Answer:
27.5
This is because you plug the numbers into the equation. Hope this helps!
Solve
7x+2y=16
5x-2y=20
x= y=
(3 marks)
In statistical experiments, each time the experiment is repeateda. the same outcome must occurb. the same outcome can not occur againc. a different outcome may occurd. None of the other answers is correct.
In statistical experiments, each time the experiment is repeated, a different outcome may occur. The correct answer is C.
Statistical experiments involve random processes, such as the random selection of individuals from a population, the random assignment of subjects to groups, or the random measurement of a variable.
The outcome of a statistical experiment is influenced by chance and is inherently uncertain, so it is not possible to guarantee that the same outcome will occur every time the experiment is repeated. Different outcomes may occur, even if the experimental conditions are kept constant, due to the random nature of the processes involved.
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Explain the deifferences between properties of equality of equality and properties of inequality when solving the equations and inequality
Step-by-step explanation:
equality have the same values where as inequality have different values
Answer:
using the properties of equality on any equation will not change the solution set. When multiplying or dividing an any quality by a negative number, you must reverse the inequality symbol or he will not get the correct solution set.
Step-by-step explanation:
Daniel opens a new savings account and makes an initial deposit of $1,200. If the account earns 2.5% annual interest, which equation shows how much money is in the account in 9 months?
The total amount of money in the account after 9 months is $1,445, with an initial deposit of $1200 and 2.5% annual interest.
What is annual interest?Annual interest is the interest earned or paid over the course of a year on any given investment. It is typically expressed as a percentage rate and is calculated by multiplying the interest rate by the principal amount of the investment and then dividing that amount by the number of days in the year.
For example, if an investor invests $1,000 in a savings account that pays a 3% annual interest rate, the investor would earn $30 in interest over the course of the year ($1,000 x 0.03 = $30).
Let P be the principal (initial deposit), r be the interest rate (2.5%), and t be the time (9 months).
P(1 + rt) = 1200(1 + (2.5%)(9/12))
1200(1 + 0.2125) = 1200(1.2125)
1200(1.2125) = 1445
Therefore, in 9 months, there will be $1,445 in the account.
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Answer:
400
Step-by-step explanation:
so you add it then u subtract the rest
6(x + 7.50) = 4(2x + 9.50), what is the value of x?
Answer:
x=3.50
Step-by-step explanation:
6(x+7.50)=4(2x+9.50)
6x+45=8x+38
6x-8x=38-45
-2x = -7
x = -7/-2
x = 3.50
Let F(x) be the expression "x has fleas," and the domain of discourse is dogs. The statement is "All dogs have fleas." Which option below is the most accurate. O a. The expression is Vx F(x), its negation is 3x-F(x), and the sentence is "There is a dog that does not have fleas." b. The expression is Ex F(x), its negation is Vx-FX), and the sentence is "There is a dog that has fleas." O c. The expression is 4x F(x), its negation is Wx-F(x), and the sentence is "There is no dog that does not have fleas." O d. The expression is - x F(x), its negation is axF(x), and the sentence is "There is a dog that does not have fleas."
Okay, let's break this down step-by-step:
The original statement is: "All dogs have fleas."
This suggests the expression should represent "all" or "every" dogs having fleas.
So the correct options are:
a) The expression is Vx F(x), its negation is 3x-F(x), and the sentence is "There is a dog that does not have fleas."
c) The expression is 4x F(x), its negation is Wx-F(x), and the sentence is "There is no dog that does not have fleas."
Between these two, option c is more accurate:
c) The expression is 4x F(x), its negation is Wx-F(x), and the sentence is "There is no dog that does not have fleas."
4x means "every x", representing all dogs.
And Wx-F(x) is the negation, meaning "it is not the case that every x lacks F(x)", or "not every dog lacks fleas".
Which captures the meaning of "There is no dog that does not have fleas."
So the most accurate option is c.
Let me know if this helps explain the reasoning! I can provide more details if needed.
The most accurate option is b. The expression "All dogs have fleas" can be translated into the quantified expression Ex F(x), which means there exists at least one dog x that has fleas.
The negation of this statement would be Vx -F(x), which means there exists at least one dog x that does not have fleas. This statement can be translated into the sentence "There is a dog that has no fleas."
Option a is incorrect because Vx F(x) would mean "There exists a dog that has fleas" and its negation would be 3x -F(x), which would mean "It is not the case that all dogs have fleas." Option c is also incorrect because 4x F(x) means "No dog has fleas," which is the opposite of the given statement. The negation of this statement would be Wx -F(x), which means "There exists no dog that does not have fleas." Option d is incorrect because -x F(x) means "No dog has fleas," which again is the opposite of the given statement. Its negation would be ax F(x), which would mean "All dogs have fleas," which is not the correct negation.Thus, the most accurate option is b. The expression "All dogs have fleas" can be translated into the quantified expression Ex F(x), which means there exists at least one dog x that has fleas.Know more about the quantified expression
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The radius of a circle can be approximated using the expression √(A/3). A circular kiddie swimming pool has an area about 28 square feet. An inflatable full-sized circular pool has an area of about 113 square feet. How much greater is the radius of the full-sized pool than the radius of the kiddie pool? round to the nearest whole number.
It says Hint: First find the radius of each pool by substituting for A in the expression. Divide by 3 before approximating square root.
Answer:
yeah I know you are literally perfect for you to be home
By using the expression to approximate the radius of a circle, we want to compare the radius of the two pools. We will find that the radius of the full-sized pool is 2 times larger than the radius of the kiddie pool.
The expression for the radius of a circle is:
R = √(A/3)
Where A is the area of said circle.
The circular kiddie swimming pool has an area of 28ft^2, we just replace that in the above expression to get:
R = √(28 ft^2/3) = 3 ft
The full-sized pool has an area of 113 ft^2, then its radius is:
R' = √(113 ft^2/3) = 6 ft
To see how much greater is the radius of the full-sized pool than the radius of the kiddie pool, we just take the quotient:
R'/R = 6ft/3ft = 2
Meaning that the radius of the full-sized pool is 2 times larger than the radius of the kiddie pool.
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What is the slope of the line that passes through the points -15,-1 and -5,5
Find the product. Simplify your answer. (3f–1)(4f+1)
kinda lost...
-5(-4x+4)-3x=3(x-7)-6
if you could help me I would really appreciate it thank you :,)
Answer:
- 1/2
Step-by-step explanation
Answer:x=-1/2
Step-by-step explanation:
Mr. Randall, a salesperson, earns a weekly salary of $300 plus a commission of 7% of
his weekly sales of merchandise. Last week, Mr. Randall earned $426. This can be
represented by the equation below, where s represents his total sales, in dollars, for
the week.
$300 + $0.07s = $426
How many dollars worth of merchandise did Mr. Randall sell last week?
Answer:
-3
Step-by-step explanation:
Based on his weekly salary and commission, we can calculate that Mr. Randall sold goods worth $1,800.
In the formula given, sales is represented as s. To find the total sales, you can solve the equation:
300 + 0.07s = 426
0.07s = 426 - 300
s = 126 / 0.07
= $1,800
In conclusion, Mr. Randall sold $1,800 worth of goods.
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What is the x coordinate of the point of inflection on the graph of y=1/3x^3+5x^2+24
a. 5
b. 0
c. -10/3
d. -5
e. -10
The point of inflection on the graph of y=1/3x3+5x2+24 has an x coordinate of -5.
Explain about the co-ordinate?A pair of images that show, using the separations between the two reference axes, where a point is located on a coordinate plane. commonly shown by the x- and y-values (x, y).
any of the various diagrams that are used to depict the location of a point in relation to another point, an object, space, or a line. Coordinates based on latitude and longitude
Coordinates, a pair of numbers (also known as Cartesian coordinates), or sometimes a letter and a number are used to identify a specific point on a grid, commonly referred to as a coordinate plane. The x (horizontal) and y (vertical) axes are the two axes of a coordinate plane, which is divided into four quadrants (vertical).
y = (1/3) x³ + 5x² + 24
y = x² + 10x
y = 2x + 10
which, at x = -5, equals 0,
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A weather station on the top of a mountain reports that the temperature is currently
0'C and has been falling at a constant rate of 3°C per hour. If it continues to fall
this rate, find each indicated temperature. Explain or show your reasoning.
The needed temperature continues to decline at this pace in 2 hours -6°C, 5 hours -15°C, and half an hour -1.5°C.
How to solve this?A weather station on a mountaintop says that the temperature is now 0°C and has been dropping at a consistent pace of 3°C every hour.
We must discover,
What will the temperature be in 2 hours, 5 hours, and half an hour if it continues to plummet at current rate?
In response to the question,
A weather station on a mountaintop says that the temperature is now 0°C and has been dropping at a consistent pace of 3°C every hour.
The temperature drops by 3°C in one hour = 0 – 3 = -3°C
The temperature drops in two hours = (2)(-3°C) = -6°C
Temperature drop in 5 hours = (5)(-3°C) = -15°C
In half an hour, the temperature drops = (0.5)(-3°C) = -1.5°C.
As a result, the needed temperature continues to decline at this pace in 2 hours -6°C, 5 hours -15°C, and half an hour -1.5°C.
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The required temperature will drop further at this rate in 2 hours at -6 °C, 5 hours at -15 °C, and 30 minutes at -1.5 °C.
What is the weather station on the top of a mountain?A weather station on a mountaintop says that the temperature is now 0 °C and has been dropping at a consistent pace of 3 °C every hour.
A weather station is a place equipped with tools for measuring atmospheric conditions, gathering data for weather forecasts, and researching the weather and environment.
The temperature drops by 3 °C in one hour = 0 – 3 = -3 °C. The temperature drops in two hours = (2)(-3 °C) = -6 °C
Temperature drop in 5 hours = (5)(-3 °C) = -15 °C
In half an hour, the temperature drops = (0.5)(-3 °C) = -1.5 °C.
Therefore, the needed temperature continues to decline at this pace in 2 hours -6 °C, 5 hours -15 °C, and half an hour -1.5 °C.
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a newly employed nurse administrator wants to know more about the employees on the units the administrator supervises. the manager accesses the managerial database and gathers data about all of the current employees on the unit, including work shift, number of years employed, age, gender, educational preparation, certifications, work history, and professional accomplishments, analyzing the data statistically. what type of quantitative research is this?
This is an example of a descriptive quantitative research study.
Descriptive quantitative research involves collecting and analyzing data to describe the characteristics of a population or phenomenon. In this case, the nurse administrator is gathering and analyzing data about the employees on the units they supervise, such as work shift, number of years employed, age, gender, educational preparation, certifications, work history, and professional accomplishments. Statistical techniques such as mean, median, and mode are used to analyze the data, allowing the nurse administrator to compare the characteristics of the employees across various dimensions. This type of research is used to develop an understanding of a given population or phenomenon, allowing for informed decision-making.
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Write an equation for the line in slope-intercept form
f(x)=-3x^2 find f(-2)
Answer:
12
Step-by-step explanation:
f(-2)=3(-2)^2
f(-2)=3(4)
f(-2)=12
the ability to order items in a sequence, such as longest to shortest, is known as:
The ability to order items in a sequence, such as longest to shortest, is known as Seriation.
Seriation is a cognitive skill that involves arranging objects, events, or ideas in a particular order or sequence. It is a crucial aspect of cognitive development and is typically acquired during early childhood. Seriation is the ability to mentally order objects along a quantitative dimension, such as size, weight, or length.
Seriation involves comparing and ordering items based on specific criteria. For example, if given a group of objects of different lengths, a child who has developed seriation skills will be able to arrange the objects in order from shortest to longest. Similarly, if given a group of numbers, a child who has developed seriation skills will be able to arrange them in order from smallest to largest.
Seriation is an important cognitive skill that is used in various areas of life, including academic, professional, and personal domains. It allows individuals to organize information and ideas in a logical and meaningful way, which can facilitate more efficient processing and understanding of complex concepts.
Overall, seriation is a fundamental cognitive skill that plays a crucial role in various aspects of life, including problem-solving, decision-making, and organization. It is an essential skill that supports the development of higher-order thinking skills, such as analysis, evaluation, and synthesis.
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Jenna’s method: mia’s method: 5(30 4) 5(30 4) (5)(30) (5)(4) 5(34) = 170 150 20 = 170 explain why both jenna and mia arrived at the same answer and the advantage of one method over the other.
The steps in Mia's method were smaller than in Jenna's, which was an advantage.
What is distributive property and direct calculation?The same result will be obtained by adding the products of multiplying the sum of two or more addends by a number as opposed to multiplying each addend separately by the number.
The direct algorithm process suggested in this paper is known as the direct calculation method (DCM), and it can deal with using confinement loss as an incremental step to simulate the effect of moving tunnel face excavation, calculating the stresses and displacements in each step, and drawing the results.
Jenna's technique:
\(\begin{aligned}&5(30+4) \\&=(5)(30)+(5)(4) \\&=150+20 \\&=170\end{aligned}\)
Mia's technique:
\(\begin{aligned}&5(30+4) \\&=(5)(34) \\&=170\end{aligned}\)
Find: What was the benefit of using one method over the other and why did Jenna and Mia arrive at the same conclusion?Future:Both used the right approach, albeit in different ways.
One uses the distributive property, whereas the other uses direct calculation.
Consequently, Jenna and Mia came to the same conclusion.
However, Mia's approach has one advantage over Jenna's: it requires fewer steps.
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Need help with 7, 8, 9, & 10
7. Rewriting the expression from the figures as 28° > (2x - 2)°
8. Solving the inequality of 28 > (2x - 2), where x < 15
9. Solving inequality for x: 2x - 2 > 0, where x > 1
10. The range of values for x are: 1 < x < 15 .
What is angle?An angle is a figure in plane geοmetry that is created by twο rays οr lines that have a shared endpοint. The Latin term "angulus," which means "cοrner," is where the wοrd "angle" οriginates. The shared endpοint οf twο rays is knοwn as the vertex, and the twο rays are referred tο as sides οf an angle. It is nοt necessary fοr the angle tο be in Euclidean space if it lies in the plane. Angles are referred tο as dihedral angles if they are created by the intersectiοn οf twο planes in a place οther than Euclidean. The symbοl "∠" is used tο symbοlise angles. The Greek symbοl,,, etc. can be used tο represent the angle between the twο rays.
6. As angle will increase if the opposite side increase, Therefore, m∠UTV > m∠WTV as their opposite sides are 5 > 4.
7. Rewriting the expression from the figures as 28° > (2x - 2)°
8. Solving the inequality of 28 > (2x - 2)
⇒ 28 > 2x - 2
⇒ 28 + 2> 2x
⇒ 30 > 2x
⇒ 30/2 > x
⇒ x < 15
9. Any angle in a triangle must have a measure greater than 0°
Solving inequality for x: 2x - 2 > 0
2x - 2 > 0
2x > 2
x > 2/2
x > 1
10. The range of values for x are: 1 < x < 15 .
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Curt and Melanie are mixing 70% of blue paint and 30% of yellow paint to make seafoam green paint in a 1. 5 quarts bucket. Use the percent equation to find out how much yellow paint they should use
The amount of yellow paint Curt and Melanie should use is 0.45 quarts so that they can make 1.5 quarts bucket of seafoam green paint.We can use per cent equation.
Given that to make 1.5 quarts bucket of seafoam green paint Curt and Melanie have to mix 70 parts blue paint and 30 parts yellow paint.If 100 percent represent total paint then for 1.5 quarts we have to find the proportion of yellow paint.Let it be x.
30% / 100% =30 / 100 = x / 1.5 quarts.
We can reduce the equation further,
0.3 = x / 1.5.
0.3 * 1.5 = x
x = 0.45
We can also find blue paint proportion similar by substituting 30 per cent to 70 per cent.
As a result of our calculation, we found the amount of yellow paint to be 0.45 quarts.
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Blake delivers food for Uber eats. He charges customers a $3 delivery fee plus $0.25 per mile. Write a function that can be used to find t, the total Blake would charge if he delivered food that is m miles away
The function that can be used to find total Blake would charge if he delivered the food will be 3 + 0.25m.
From the information given, we are told that Blake delivers food for Uber eats and charges customers a $3 delivery fee plus $0.25 per mile.
Therefore, in order to deliver the food to m miles away, the amount that'll be charged will be:
= 3 + (0.25 × m)
= 3 + 0.25m
In conclusion, the function is 3 + 0.25m.
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We've seen that as the sailboat logo is resized by dilation, the line segments that make up the logo may be mapped onto
parallel lines or stay on the same line. The lengths of the image are the lengths of the preimage multiplied by the scale factor
Now we will use GeoGebra to compare the angles of a dilated figure to the angles of the original figure. Open dilations
again. Then complete each step below. For help, watch this video to learn more about measurement tools in GeoGebra.
Part A
Measure and record the measures of these angles in the original logo. Then set n = 0.5 and n = 2, and record the
measures of the corresponding angles in each resulting image.
BIUX² X₂ 14pt
A
Angle Original Measure Measure After Dilation
n = 0.5
n = 2
ZFGB
ZGBC
ZLKJ
B
The angle measures of the triangles before and after dilation are the same
Calculating the angle measures before and after dilationGiven that, we have a triangle that is dilated to form another triangle by a scale factor of n
The dilation transformation is a rigid transformation
This means that it changes the size of a shape after it is applied
However, the shape and the image would be similar shapes and as such would have their angles unchanged
This means that irrespective of the value of the scale factor n, the angle measures would remain the same
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F(x)=(1/4)x^3 + x -1
What is the value of (f^-1)'(x) when x=3?
Answer: To find the value of (f^-1)'(x) when x=3, we need to use the formula for the derivative of the inverse function:
(f^-1)'(x) = 1 / f'(f^-1(x))
Here, f(x) = (1/4)x^3 + x - 1. To find f'(x), we need to take the derivative of f(x) with respect to x:
f'(x) = (3/4)x^2 + 1
Now, we need to find f^-1(x) by solving for x in terms of y:
y = (1/4)x^3 + x - 1
y + 1 = (1/4)x^3 + x
4(y + 1) = x^3 + 4x
x^3 + 4x - 4(y + 1) = 0
We can solve this equation for x using a numerical method such as Newton's method or by using a graphing calculator. After solving, we find that:
f^-1(x) = g(x) = cube root of (x - 3) + 1
Now, we can find (f^-1)'(x) when x = 3:
(f^-1)'(3) = 1 / f'(f^-1(3))
= 1 / f'(g(3))
= 1 / [(3/4)g(3)^2 + 1]
= 1 / [(3/4)(-1)^2 + 1]
= 1 / (3/4 + 1)
= 4/7
Therefore, the value of (f^-1)'(x) when x = 3 is 4/7.
Step-by-step explanation:
The wind blew away 15 pages of your homework! That was 310 of your entire assignment. How many pages of your homework are remaining?
After the wind blew away 15 pages of the homework, there are 295 pages remaining in the assignment.
To calculate the number of remaining pages, we subtract the number of pages blown away from the total number of pages in the assignment. In this case, the total number of pages was 310, and 15 pages were blown away. Therefore, we can find the remaining pages by subtracting 15 from 310, resulting in 295 pages remaining.
This subtraction represents the loss of the blown-away pages, leaving us with the number of pages that were not affected by the wind. Hence, after losing 15 pages, the student still has 295 pages of their homework intact.
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Your friend loans you $20,000 for school. In five years he wants
$40,000 back. What is the interest rate he is charging you?
Remember to show your work.
The interest rate your friend is charging you for the $20,000 loan is 20% per year.
What is the interest rate on the loan?
The simple interest is expressed as;
A = P( 1 + rt )
Where A is accrued amount, P is principal, r is the interest rate and t is time.
Given that;
The Principal P = $20,000
Accrued amount A = $40,000
Elapsed time t = 5 years
Interest rate r =?
Plug these values into the above formula and solve for the interest rate r:
\(A = P( 1 + rt )\\\\r = \frac{1}{t}( \frac{A}{P} -1 ) \\\\r = \frac{1}{5}( \frac{40000}{20000} -1 ) \\\\r = \frac{1}{5}( 2 -1 ) \\\\r = \frac{1}{5}\\\\r = 0.2 \\\\\)
Converting r decimal to R a percentage
Rate R = 0.2 × 100%
Rate r = 20% per year
Therefore, the interest rate is 20% per year.
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the price of a shirt is increased by 20%, and the price of a 40% pair of shoes is decreased by 40%. If the new price of the shirt now equals the new price of the shoes, what was the original price of the shirt?
I need simple and easy explanation with steps please and thankyou
Answer:
Zadanie 5.
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email should be 50 to 120 words, not including
the words provided a
Imagine you've got a new British friend called
Joshua. Write an email to him. In your email:
• introduce yourself (age town, class at school)
describe your room or your favourite things
• describe your family and your best friend or
group of friends
000
To: Joshua
Subject: All about me!
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Find the derivative of the function at P0 in the direction of A.
f(x,y,z)=xy+yz+zx, (1-,1,-2)
A= 3i+2j-6k
The derivative of the function at P0 in the direction of A is,
(\(\frac{df}{dx}\))\(p_{0}\) = -3 , (\(\frac{df}{dy}\))\(p_{0}\) = -1 , (\(\frac{df}{dz}\))\(p_{0}\) = 0
Geometrically, the derivative of a function can be interpreted as the slope of the graph of the function or, more precisely, as the slope of the tangent line at a point. Its calculation, in fact, derives from the slope formula for a straight line, except that a limiting process must be used for curves.
Given that,
The derivative of the function at P0 in the direction of A.
f(x, y, z) =
f(x, y, z) = (1,-1,-2)
x = 1
y = -1
z = -2
Derivative of f(x, y, z) = xy + yz + zx
\(\frac{df}{dx}\) = y + z
\(\frac{df}{dy}\) = x + z
\(\frac{df}{dz}\) = x + y
We can substitute f(x, y, z) = (1,-1,-2) values,
(\(\frac{df}{dx}\))\(p_{0}\) = y + z
(\(\frac{df}{dx}\))\(p_{0}\) = -1 + (-2)
(\(\frac{df}{dx}\))\(p_{0}\) = -3
(\(\frac{df}{dy}\))\(p_{0}\) = x + z
(\(\frac{df}{dy}\))\(p_{0}\) = 1 + (-2)
(\(\frac{df}{dy}\))\(p_{0}\) = 1-2
(\(\frac{df}{dy}\))\(p_{0}\) = -1
(\(\frac{df}{dz}\))\(p_{0}\) = x + y
(\(\frac{df}{dz}\))\(p_{0}\) = 1 + (-1)
(\(\frac{df}{dz}\))\(p_{0}\) = 1-1
(\(\frac{df}{dz}\))\(p_{0}\) = 0
Therefore,
The derivative of the function at P0 in the direction of A is,
(\(\frac{df}{dx}\))\(p_{0}\) = -3 , (\(\frac{df}{dy}\))\(p_{0}\) = -1 , (\(\frac{df}{dz}\))\(p_{0}\) = 0
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What is the image point of (3,-5) after a translation right 3 units and 1 up unit