The formula to calculate the simple interest rate is:
\(R=(\frac{1}{T})(\frac{A}{P}-1)\)Where R is the simple interest rate (in decimal form), T is the time, P is the principal (the initial amount borrowed) and A is the total amount paid after time T. In this case:
\(\begin{gathered} T=7 \\ A=720 \\ P=660 \end{gathered}\)Substituting these values into the formula:
\(R=(\frac{1}{7})(\frac{720}{660}-1)\)Solving the operations:
\(R=\frac{1}{7}(0.09090909)\)\(R=0.012987\)To convert this simple interest rate into a percentage, we multiply it by 100:
\(0.012987\times100=1.2987\)This is the simple interest rate per month:
R=1.2987 % per moth
We can also calculate the simple interest rate per year by multiplying the previous result by 12 (this is because there are 12 months in a year)
\(1.2987\times12=15.5844\)The simple interest rate per year is:
R=15.5844 % per year
Answer:
R=1.2987 % per moth
R=15.5844 % per year
What number does the model show?
600 hundred 14 Tens 2 ones
Answer:
742
Step-by-step explanation:
Which of the following rational functions is graphed below?
A. F(x) =(x-2)/(x+5)
B. F(x) =1/(x-2)(x + 5)
C. F(x) =1/(2x + 5)
D. F(x)= 1/(x+2)(x-5)
The graph of the rational equation is solved and f ( x ) = 1/ ( x + 2 ) ( x - 5 )
Given data ,
Let the function be represented as f ( x )
Now , the value of f ( x ) is
f ( x ) = 1/ ( x + 2 ) ( x - 5 )
The function will have increasingly large values as the denominator approaches zero. When x -2, the denominator is positive and the function tends to the upside. When x -2 x 5, the function is negative. When x 5, the function becomes positive once more.
Hence , the rational function is f ( x ) = 1/ ( x + 2 ) ( x - 5 )
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The complete question is attached below :
Which of the following rational functions is graphed below?
A. F(x) =(x-2)/(x+5)
B. F(x) =1/(x-2)(x + 5)
C. F(x) =1/(2x + 5)
D. F(x)= 1/(x+2)(x-5)
1/x-2/3=3/2x find x
Answer:
1/x-2/3=3/2x
-2/3=3/2x-1/x
-2/3=(3-2)/2x
-2/3=1/2x
by cross multiplication
-2(2x)=1(3)
-4x=3
x= -3/4
Step-by-step explanation:
I hope this will help
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b) In a sunny day, the length of the shadow of a pole 30m long is equal to the
of the pole. After a while, it is found to be 51.96m long, find the altitude of the sun in both cases.
$650 is invested in an account earning 8.7% interest (APR), compounded continuously. Write a function showing the value of the account after � t years, where the annual growth rate can be found from a constant in the function. Round all coefficients in the function to four decimal places. Also, determine the percentage of growth per year (APY), .
The value of the account after t years is A(t) = \(650(1.0072)^{12t}\)
The annual growth rate is 0.72%.
What is compound interest?The interest earned on savings that are computed using both the original principal and the interest accrued over time is known as compound interest. A = P(1 + r/n)^nt, where P is the principal balance, r is the interest rate, n is the number of times interest is compounded annually, and t is the number of years, which is the formula for compound interest.
Given, $650 is invested in an account earning 8.7% interest (APR), compounded continuously.
From the general formula of compound interest:
A = P(1 + r/n)^nt,
where P is the principal balance,
r is the interest rate,
n is the number of times interest is compounded annually, and
t is the number of years
In our case.
P = 650
r = 8.7
time = x
Thus,
A(x) = P(1 + 0.087/12)¹²ˣ
A(x) = 650( 1.0072)¹²ˣ
The value of the account after t years is A(t) = \(650(1.0072)^{12t}\)
Annual growth rate
1.0072 - 1 = 0.0072 = 0.72%
The annual growth rate is 0.72%.
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Given that cos x = 3/5 and 0
Answer:
What do we have to do in this? Find x? Let me know I'll explain it in the comment section
under the pink line is the answer, simply explain the process
The function is continuous at a = 5
Explanation:Given:
\(18)\text{ }f(x)\text{ = }\frac{2x^2+3x+1}{x^2+5x};\text{ a = 5}\)To find:
If the function is continuous at a = 5
For a function to be continuous at a point, the limit exists for the point and the value of the function at that point must be equal to the limit at the point.
when x = 5
\(\begin{gathered} f(x)\text{ = }\frac{2(5)^2+3(5)+1}{(5)^2+5(5)} \\ \\ f(x)\text{ = }\frac{50\text{ + 15 + 1}}{25\text{ + 25}} \\ \\ f(x)\text{ = }\frac{66}{50} \\ \\ f(x)\text{ = }\frac{33}{25} \end{gathered}\)Finding the limit at the point:
\(\begin{gathered} \lim_{a\to5}\frac{2x^2+3x\text{ + 1}}{x^2+5x} \\ \\ To\text{ get the limit at the point a = 5, we will susbtitute x with 5} \\ =\text{ }\frac{2(5)\placeholder{⬚}^2+3(5)+1}{(5)\placeholder{⬚}^2+5(5)} \\ \\ =\text{ }\frac{50+15+1}{25+25}\text{ = }\frac{66}{50} \\ \\ =\text{ }\frac{33}{25} \end{gathered}\)The value of the function at that point is equal to the limit at the point.
Hence, the function is continuous at a = 5
A) Find an equation for the line perpendicular to the tangent line to the curve y=x^3-4x+6 at the point (2,6)
-The equation is y=
b) What is the smallest slope on the curve? At what point on the curve does the curve have this slope?
-The smallest slope on the curve is
-The curve has the smallest slope at the point
c) Find equations for the tangent lines to the curve at the points where the slope of the curve is 8.
Answer:
f(x) = x³ - 4x + 6
f'(x) = 3x² - 4
a) f'(2) = 3(2²) - 4 = 12 - 4 = 8
6 = 8(2) + b
6 = 16 + b
b = -10
y = 8x - 10
b) 3x² - 4 = 0
3x² = 4, so x = ±2/√3 = ±(2/3)√3
= ±1.1547
f(-(2/3)√3) = 9.0792
f((2/3)√3) = 2.9208
c) 3x² - 4 = 8
3x² = 12
x² = 4, so x = ±2
f(-2) = (-2)³ - 4(-2) + 6 = -8 + 8 + 6 = 6
6 = -2(8) + b
6 = -16 + b
b = 22
y = 8x + 22
f(2) = 6
y = 8x - 10
The equation perpendicular to the tangent is y = -1/8x + 25/4
-The smallest slope on the curve is 2.92
The curve has the smallest slope at the point (1.15, 2.92)
The equations at tangent points are y = 8x + 16 and y = 8x - 16
Finding the equation perpendicular to the tangentFrom the question, we have the following parameters that can be used in our computation:
y = x³ - 4x + 6
Differentiate
So, we have
f'(x) = 3x² - 4
The point is (2, 6)
So, we have
f'(2) = 3(2)² - 4
f'(2) = 8
The slope of the perpendicular line is
Slope = -1/8
So, we have
y = -1/8(x - 2) + 6
y = -1/8x + 25/4
The smallest slope on the curveWe have
f'(x) = 3x² - 4
Set to 0
3x² - 4 = 0
Solve for x
x = √[4/3]
x = 1.15
So, we have
Smallest slope = (√[4/3])³ - 4(√[4/3]) + 6
Smallest slope = 2.92
So, the smallest slope is 2.92 at (1.15, 2.92)
The equation of the tangent lineHere, we set f'(x) to 8
3x² - 4 = 8
Solve for x
x = ±2
Calculate y at x = ±2
y = (-2)³ - 4(-2) + 6 = 6: (-2, 0)
y = (2)³ - 4(2) + 6 = 6: (2, 0)
The equations at these points are
y = 8x + 16
y = 8x - 16
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Please help answer my question
Answer:
x = 6
Step-by-step explanation:
This is a bit of a tricky equation, and it's what we call an exponential equation since it involves some exponents. The way we begin to solve these kinds of problems is make the base on each side of the equals sign the same. On one side, we have 9 as our base, and on the other side, we have 3 as our base. 9 = 3², so we can rewrite our equation as shown below:
(3²)⁴ˣ⁻¹⁰ = 3⁵ˣ⁻²
From there, we can use the exponent rule (xᵃ)ᵇ = xᵃᵇ to simplify the left side of the equation.
3²⁽⁴ˣ⁻¹⁰⁾ = 3⁵ˣ⁻²
3⁸ˣ⁻²⁰ = 3⁵ˣ⁻²
Since our bases are now the same, we can take just the exponents and turn it into a new equation as shown below:
8x - 20 = 5x - 2
Hopefully at this point, this problem becomes easy for you, but I'll show how I solved this new equation below in case it doesn't make sense.
8x - 20 = 5x - 2
8x - 20 - 5x = 5x - 2 - 5x
3x - 20 = -2
3x - 20 + 20 = -2 + 20
3x = 18
3x/3 = 18/3
x = 6
Hopefully that's helpful! Let me know if you need more help. :)
factorise:x^3-(y-z)^3
The factorized form of \(x^3 - (y - z)^3\ is \ (x - y + z)(x^2 - xy + 2xz + yz - 2z^2).\)
The Factorization is derived from the application of a mathematical identity. As an AI language model, the information provided is generated based on existing knowledge and formulas.
The given expression is \(x^3 - (y - z)^3.\)To factorize it, the difference of cubes, which states that a^3 - b^3 can be factorized as\((a - b)(a^2 + ab + b^2).\)
Applying this identity to our expression, we have:
\(x^3 - (y - z)^3 = (x - (y - z))((x - (y - z))^2 + (x - (y - z))(y - z) + (y - z)^2)\)
Simplifying further, we get:
\(= (x - y + z)(x^2 - 2xy + 2xz - y^2 + 2yz - z^2 + xy - y^2 + yz - z^2 + y^2 - 2yz + z^2)\\= (x - y + z)(x^2 - 2xy + xy + 2xz + yz - 2yz - y^2 + y^2 - y^2 + 2yz - 2z^2 + y^2 - z^2 + z^2)\\= (x - y + z)(x^2 - xy + 2xz + yz - 2z^2)\)
So, the factorized form of \(x^3 - (y - z)^3 \ is\ (x - y + z)(x^2 - xy + 2xz + yz - 2z^2).\)
the above factorization is derived from the application of a mathematical identity.
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PLEASE HELP !! ASAP THANKS :)
Answer:
The graph will shift 3 units down
The length of a rectangular poster is 2 more inches than two times its width. The area of the poster is 84 square inches. Solve for the dimensions (length and width) of the poster.
Step-by-step explanation:
w = width
2w + 2 = Length
Area = W x L = 84 = w (2w+2)
84 = 2w^2 + 2w
0 = 2w^2 + 2w - 84 Use Quadratic Formula
a = 2 b=2 c = -84
to find
W = 6 then L = 14 inches
Order the ratios from least to greatest.
5:8 11:16 18:32
The least to greatest of the ratio is 18 : 32, 5 : 8, and 11 : 16
Arrange from least to greatestLeast to greatest arrangement can also be referred to as ascending order. Ascending order is the order such that each element is greater than or equal to the previous element.
5 : 8
= 5/8
= 0.625
11 : 16
= 11/16
= 0.6875
18 : 32
= 18/32
= 0.5625
Therefore, the ratio can be arranged as 18 : 32, 5 : 8, and 11 : 16 in ascending order.
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The base of the mountain is 6,500 feet above sea level and AB measures 230 feet across. Given that the measurements for QAP is 20° and QBP is 35°, how far above sea level is peak P ? Express your answer to the nearest foot.
Height above sea level:
Answer:
6610
Step-by-step explanation:
We have tan(X) = opposite/ adjacent
tan(QBP) = PQ/BQ
tan(35) = PQ/BQ ---eq(1)
tan(QAP) = PQ/AQ
tan(20) = \(\frac{PQ}{AB +BQ}\)
\(=\frac{1}{\frac{AB+BQ}{PQ} } \\\\=\frac{1}{\frac{AB}{PQ} +\frac{BQ}{PQ} } \\\\= \frac{1}{\frac{230}{PQ} + tan(35)} \;\;\;(from\;eq(1))\\\\= \frac{1}{\frac{230 + PQ tan(35)}{PQ} } \\\\= \frac{PQ}{230+PQ tan(35)}\)
230*tan(20) + PQ*tan(20)*tan(35) = PQ
⇒ 230 tan(20) = PQ - PQ*tan(20)*tan(35)
⇒ 230 tan(20) = PQ[1 - tan(20)*tan(35)]
\(PQ = \frac{230 tan(20)}{1 - tan(20)tan(35)}\)
\(= \frac{230*0.36}{1 - 0.36*0.7}\\\\= \frac{82.8}{1-0.25} \\\\=\frac{82.8}{0.75} \\\\= 110.4\)
PQ = 110.4
≈110
Height above sea level = 6500 + PQ
6500 + 110
= 6610
wyatt types 120 words in 2 minutes. enter the number of words wyatt types 5 minutes at this rate
wyatt types 120 words in 2 minutes that means
In 2 minutes Wyaat type = 120 words
Then for the number of words wyaat types in one minute
We divide the number of words typped in two minutes with the time
So,
\(\begin{gathered} \text{ Number of words Wyatt types in 1 minute=}\frac{120}{2} \\ \text{ Number of words Wyatt types in 1 minute=60 words} \end{gathered}\)Now,
for the number of words type in 5 minute : Multiply the 5 by the number of words written in 1 minute
\(\begin{gathered} \text{ Number of words wyatt type in 5 minutes=5}\times Number\text{ of words typed in 1 minute} \\ \text{Number of words wyatt type in 5 minutes}=5\times60 \\ \text{Number of words wyatt type in 5 minutes}=300\text{ words} \end{gathered}\)Answer : 300 words
WILL MARK BRAINLEAST 100% 20 POINTS
Plz answer Honestly or I'll report your answer but only if it's wrong
-3 + { 1 – 3[20 + 2(-6 – 7)]}
SIMPLIFY ANSWER:
Answer:
16
Step-by-step explanation:
everything simplified is 16
Answer:
16
Step-by-step explanation:
To simplify, we have to start from the innermost parentheses and expand from there!
-3+{1-3[20+2(-6-7)]} -6-7=-13
-3+{1-3[20+2(-13)]} 2*-13=-26
-3+{1-3[20-26]} 20-26=-6
-3+{1-3[-6]} -3*-6=18
-3+{1+18} 1+18=19
-3+19 -3+19=16
16
I really hope this helps!! Have a wonderful day C:
Find the slope of the line that goes through the given points. 1) (3, -5), (7,-6)
Answer:
slope = - \(\frac{1}{4}\)
Step-by-step explanation:
Calculate the slope m using the slope formula
m = \(\frac{y_{2}-y_{1} }{x_{2}-x_{1} }\)
with (x₁, y₁ ) = (3, - 5) and (x₂, y₂ ) = (7, - 6)
m = \(\frac{-6-(-5)}{7-3}\) = \(\frac{-6+5}{4}\) = - \(\frac{1}{4}\)
A sales person earns a commission of $408 for selling $3400 in merchandise. Find the commission rate. Write your answer as a percentage.
Answer:
12%
Step-by-step explanation:
408÷ 3400
3/25
3/25×4/4
12/100
anewer: 12%
You are given a penny on January 1, two pennies on January 2, four pennies on January 3, and eight pennies on January 4, and so on. 1.
Assuming the pattern continues, how many pennies do you get on the following dates? January 5 January 10 January 31
Answer:
january 5 :12
january 10:22
Step-by-step explanation:
Answer:
16 pennies512 pennies1073741824 penniesStep-by-step explanation:
We can see a pattern:
Days >> Pennies1 >> 1= 2^02 >> 2= 2^13 >> 4 = 2^24 >> 8 = 2^3...n >> 2^(n-1)So
January 5 fall on n = 5, therefore 2^4 = 16 penniesJanuary 10 falls on n = 10, therefore 2^9 = 512 penniesJanuary 31 falls on n = 31, therefore 2^30 = 1073741824 pennies19. √12
rational ir iraational
Answer:
65.8179...
Step-by-step explanation:
its 65.8179...
Prove the following,in a semigroup:
By induction, we can conclude that in a semigroup, all products of x1, x2, ...... xn (in that order) are equal.
What is semigroup?A semigroup is a mathematical structure consisting of a set of elements along with an associative binary operation. The operation must be associative, meaning that the result of the operation is independent of the order of the operands.
We can prove this by induction. Let S be a semigroup and x1, x2, x3, ..., xn be the elements of S.
Base Case: When n = 2, then the product of x1 and x2 is x1x2.
Inductive Step: Assume that the product of x1, x2, ..., xn (in that order) is equal. Then we can prove that the product of x1, x2, ..., xn+1 (in that order) is also equal.
Let a be the product of x1, x2, ..., xn (in that order). Then a = x1x2x3....xn.
Now the product of x1, x2, ..., xn+1 (in that order) is a x xn+1. Since S is a semigroup, a x xn+1 = x1x2x3....xn x xn+1.
Since the product of x1, x2, ..., xn (in that order) is equal, a = x1x2x3....xn. Therefore, the product of x1, x2, ..., xn+1 (in that order) is also equal.
By induction, we can conclude that in a semigroup, all products of x1, x2, ...... xn (in that order) are equal.
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Which set of ordered pairs represents a function?
{(-6,-4), (1, -7), (-4, 3), (-4, 8)}
{(-8, -3), (-8, 9), (9, 6), (1, -4)}
{(4,1), (-6, 6), (5,-2), (-4,1)}
{(-3, 6), (-1,0), (-8, 1), (-8, -3)}
Answer:
{(4,1), (-6, 6), (5,-2), (-4,1)} set of ordered pairs represents a function.
Step-by-step explanation:
Because every element or component of domain has unique image in co-domain.
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The area of a rectangular painting is 8712 cm^2.
If the width of the painting is 98 , what is its length?
100 POINTS!!!!
Answer:
The length is 88.90 cm
=========================
Area equation of a rectangle
A = lw, where A - area, l - length, w - widthGivenA = 8712 cm²w = 98 cmFind the length8712 = 98ll = 8712/98l = 88.90 (rounded)Answer:
Length = 88.9 cm
Step-by-step explanation:
Formula we use,
→ A = L × W
Then the value of its length is,
→ A = L × W
→ 8712 = L × 98
→ L = 8712/98
→ L = 88.8979591837
→ [ L = 88.9 cm ]
Hence, the length is 88.9 cm.
The time taken for cutting and molding a work piece is 8 minutes and 13 minutes respectively. A welder
has to cut and mold 5 such work pieces. If he starts working at 1:00 p.m., what time he would complete
his work?
He will complete his work at 2:45 pm.
First find the total amount of time it will take to go through 5 such work pieces:
= (time taken for cutting + time taken for molding) x total number of work pieces
= (8 + 13) x 5
= 105 minutes
In hours this is:
= 105 / 60
= 1 hour 45 minutes
Add this to the time he started which is 1 pm
= 1pm + 1 hour 45 minutes
= 2:45 pm
He will complete his work at 2:45 pm.
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What's the area of the park in square units
Which is an INCORRECT name for this angle?
Answer:
<FH
Step-by-step explanation:
The reason why is because FH is a line and everything else includes G, this answer does not.
Need answer plz —————
What is the slope of the line that passes through the points (-7,-8) and (-5,-6) write your answer in simplest form
y=x-1
When x=0, y = -1
When y=0, x = 1
delta y over delta x = 1/1 which means the slope is 1
Answer:
Slope is equal to 1.
Step-by-step explanation:
(-7, -8) --> (x1, y1)
(-5, -6) --> (x2, y2)
\(slope \: = \frac{y2 - y1 }{x2 - x1} \\ slope \: = \frac{ - 6 -( - 8) }{ - 5 - ( - 7)} \\ slope \: = \frac{ - 6 + 8}{ - 5 + 7} \\ slope \: = \frac{2}{2} \\ slope = 1\)
Therefore the slope of the line is 1
There are two numbers that have a sum of 47. Three times the lesser
number is equal to 9 more than the greater number. What are the
numbers?
Answer:
The numbers are 14 and 33---------------
Let the numbers be s and l.
We are given that:
Sum of the two is 47 and 3 times the lesser number is equal to 9 more than the greater number.Set up equations:
s + l = 473s = l + 9Eliminate l:
l = 47 - s and l = 3s - 9Solve for s:
47 - s = 3s - 93s + s = 47 + 94s = 56s = 14Find l:
l = 47 - 14l = 33What is the value of the expression?
3 • [(30 - 8) ÷ 2 + 2]
Answer: 39
Step-by-step explanation:
30-8=22
22/2=11
11+2=13
13 times 3 =39