Solution:
Given a straight line graph;
Two points on the line are given as;
\((1,1),(4,-2)\)The slope m, of a line is;
\(\begin{gathered} m=\frac{y_2-y_1}{x_2-x_1} \\ \\ Where; \\ x_1=1,y_1=1,x_2=4,y_2=-2 \end{gathered}\)\(\begin{gathered} m=\frac{-2-1}{4-1} \\ \\ m=-\frac{3}{3} \\ m=-1 \end{gathered}\)Thus, the point-slope equation of a line is;
\(y-y_1=m(x-x_1)\)Thus, the slope-intercept equation of line is;
\(\begin{gathered} y-1=-1(x-1) \\ \\ y=1-x+1 \\ \\ y=2-x \end{gathered}\)ANSWER:
\(y=2-x\)
Use the explicit formula an=a1+(n-1)•d to find the 300th term of the sequence below 57,66,75,84,93
An arithmetic sequence is a sequence of integers with its adjacent terms differing with one common difference. The value of the nth term of the sequence will be 2748.
What is an arithmetic sequence?An arithmetic sequence is a sequence of integers with its adjacent terms differing with one common difference.
The explicit formula for any arithmetic series is given by the formula,
\(a_n = a_1 + (n-1)d\)
where d is the difference and a₁ is the first term of the sequence.
For the given arithmetic series, the first term of the series is 57.
The value of difference, d can be written as,
d = 66 - 57 = 9
The 300th term of the sequence can be written as,
a₃₀₀ = 57 + (300-1)•9
a₃₀₀ = 2748
Hence, the value of the nth term of the sequence will be 2748.
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Bakery A. She used the equation 10
donuts $15 to show that their donuts cost about $0.67 per donut. This is less than
Bakery B's price, 12 donuts $17= about $0.71 per donut.
Kevin thinks they should order donuts from Bakery B. He used the equation $17 ÷
12 donuts to show that their donuts cost about $1.42 per donut. This is less than
Bakery A's price, $15÷ 10 donuts = about $1.50 per donut.
Who is correct?
The donuts are cheaper in bakery B which implies that Kevin is right.
What is Unitary method?In order to solve a problem for two different values of a quantity, its unit value is first derived. This method is known as unitary method. The ratio of two numbers are taken in this method. There can be two relations between the ratio a direct or n indirect. For the direct relation the quantities simultaneously increase or decrease while in the indirect it happens reverse.
The price of donuts for both bakeries are given as,
For Bakery A,
The price of 10 donuts is $15.
Unit rate is given as 15/10 = $1.50 per donut.
For Bakery B,
The price of 12 donuts is $17.
Unit rate is given as 17/12 = $1.41 per donut.
Thus, price of donuts from Bakery B is less than Bakery A.
It implies that Kevin is right.
Hence, the price of donuts is cheaper in case of bakery B which implies that Kevin is right.
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Kevin is correct. And he used the correct unit rate formula to find the inequality.
What is an inequality?In mathematics, "inequality" refers to a relationship between two expressions or values that are not equal to each other. To solve the inequality, you may multiply or divide each side by the same positive number, add the same amount to each side, take the same amount away from each side, and more. You must flip the inequality sign if you multiply or divide either side by a negative number.
Given:
Bakery A.
She used the equation 10 donuts $15 to show that their donuts cost about $0.67 per donut.
This is less than Bakery B's price, 12 donuts $17= about $0.71 per donut.
Kevin thinks they should order donuts from Bakery B.
He used the equation
$17 ÷ 12 donuts to show that their donuts cost about $1.42 per donut.
This is less than Bakery A's price,
$15÷ 10 donuts = about $1.50 per donut.
The inequality:
1.42 < 1.50
To find the unit rate:
Unit rate = the total price of donut / the number of total donuts
Kevin used the above formula to find the unit rate.
So, Kevin is right.
Therefore, Kevin is right.
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a sphere of radius r inches is sliced by a plane that is d inches from the center. in terms of r and d, what is the radius of the circle of intersection?
The cross-sectional area will be π*(y^2-x^2) as area of a circle with radius r is π*r^2.
What is equations?There are many different ways to define an equation.The definition of an equation in algebra is a mathematical statement that demonstrates the equality of two mathematical expressions.For instance, the equation 3x + 5 = 14 consists of the two equations 3x + 5 and 14, which are separated by the 'equal' sign. Mathematical algebraic equations typically have one or more variables.A linear equation may have more than one variable. A linear equation is an equation in which the highest power of the variable is always 1.This is a second-order equation. In quadratic equations, at least one of the variables should be raised to exponent 2.Hence, The cross-sectional area will be π*(y^2-x^2) as area of a circle with radius r is π*r^2.
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pls help i need help
will the inequality "7 multiplied by a number is greater than or equal to 21" have an open boundary point or a closed boundary point on the number line?
Answer:
Closed boundary point
Step-by-step explanation:
It says greater than OR equal too and having a closed boundary will indicate that 21 is apart of the inequality also.
I hope this helps
Help me out please !!!!!!!!!
Answer:
E number
Step-by-step explanation:
First add the value of x component and solve the equation (eg. (1,2) here 1 is x component
help me with this question please
Answer:
N+1
Step-by-step explanation:
It begins with = 2
then n+1=3
then n+2=4 and so on it is n+1
What is the length of the arc of a circle with radius 12 and central angle 3pi/4
Answer:
9 pi
Step-by-step explanation:
If the radius is 12, then the diameter would be 24 and the entire circle would be 24 pi.
24 times 3/8= 9
I used 3/8 because the unit circle has a circumference of 2pi so I divided it by 2.
The variables x and y vary inversely. Use the given values to write an equation relating x and y. x=7/2 y=3/5
Answer:
x = 21/10yStep-by-step explanation:
If the variables x and y vary inversely, this is expressed as;
x ∝ 1/y
x = k/y
k is the constant of proportionality
Given;
x = 7/2 and y = 3/5
Substitute;
7/2 =k/(3/5)
Cross multiply
k = 7/2 * 3/5
k = 21/10
Substitute the value of k into the formula;
x = k/y
x = (21/10)/y
x = 21/10 * 1/y
x = 21/10y
Hence the equation relating x and y is x = 21/10y
n the rectangle shown below, tan x =
1
4
The ratio of the length of AB to the length of BC is 10 : 3.
Work out the length of AC.
Give your answer in centimetres.
B
20 cm
E
Not drawn accurately
The ratio of the length of AB to the length of BC is 10 : 3. The length of AC is 26 cm.
In the given rectangle, we know that the ratio of the length of AB to the length of BC is 10:3. Let's assume the length of AB is 10x, and the length of BC is 3x.
Using the tangent function, we have tan(x) = 1/4, where x is the angle at point B. By taking the inverse tangent (arctan) of both sides, we find that x = arctan(1/4).
Now, we can set up a right triangle using the values we have. The opposite side of angle x is 10x, and the adjacent side is 3x. Using the Pythagorean theorem, we can calculate the hypotenuse:
(10x)^2 + (3x)^2 = AC^2
100x^2 + 9x^2 = AC^2
109x^2 = AC^2
AC = sqrt(109)x
To find the length of AC in centimeters, we need to determine the value of x. Using the given ratio, we know that 10x/3x = 10/3 = 20/6. Therefore, x = 6.
Substituting x = 6 into the equation for AC, we get:
AC = sqrt(109) * 6 ≈ 26 cm.
Hence, the length of AC is approximately 26 cm.
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A soccer field is a rectangle 80 meters wide and 100 meters long. The coach asks players to run from one corner to the corner diagonally across. What is this distance?
Answer:
128.06
Step-by-step explanation:
think about the diagonal of the field, breaking up a rectangle into 2 right angled triangles. we are already given the legs of the triangle (80, and 100) and now we have to solve for the hypotenuse (or the diagonal). so use pythagorean theorem :
80^2 + 100^2 = c^2
16400 = c^2
c = 128.06
help me please quickly
Answer:
Step-by-step explanation:
1. 9
2. 32
3. 813
4. 264
5. 169
Select the correct choice that completes the sentence below -5(x-3) = -5x +15 illustrates the ____ property of multiplication over addition 1. Additive 2. Inverse 3. Distributive 4. Commutative 5. Multiplication
Answer: 3. Distributive
Step-by-step explanation:
Distributive property of multiplication over addition is the only property that is require to multiply an expression to the other expression with two or more than two terms.
For example: a (b+c)= a b+ac , where a,b,c can be any expression.
Given expression: -5(x-3) = -5x +15 , which illustrates the distributive property of multiplication over addition.
Hence, the correct option is 3. Distributive.
The rest of properties cannot work for multiplication over addition as they are used for one operation.
An experiment consists of determining the speed of automobiles on a highway by the use of radar equipment. The random variable in this experiment is a Group of answer choices
The random variable in an experiment which consists of determining the speed of automobiles on a highway by the use of radar equipment is a continuous random variable. Option c is correct.
A random variable is a variable whose value is subject to variations as a result of a random event. Random variables can be classified as continuous or discrete.
A continuous random variable is a variable that can take on any value within a specified range of values, whereas a discrete random variable is a variable that can take on only specific values, with gaps between them.
The random variable in the experiment given is the speed of automobiles on a highway, and it can take on any value within a specified range of values, making it a continuous random variable.
Thus, option (c) - continuous - is the correct answer.
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integral of du/sqrt(a^2-u^2)
The integral of du/sqrt(a^2 - u^2) is arcsin(u/a) + C, where a is a constant and C is the constant of integration.
To evaluate the integral of du/sqrt(a^2 - u^2), we can use a trigonometric substitution. Let's substitute u = asin(theta), where theta is a new variable. Differentiating u with respect to theta gives du = acos(theta)*d(theta).
Now, let's substitute these expressions back into the integral:
∫(du/sqrt(a^2 - u^2)) = ∫((acos(theta)d(theta))/sqrt(a^2 - a^2sin^2(theta)))
Simplifying the expression under the square root:
= ∫((acos(theta)d(theta))/sqrt(a^2(1 - sin^2(theta))))
= ∫((a*cos(theta)d(theta))/(acos(theta)))
= ∫d(theta)
= theta + C
Since we made the substitution u = asin(theta), we need to express the result in terms of u. Using the relationship u = asin(theta), we can find theta = arcsin(u/a). Therefore, the integral becomes:
∫(du/sqrt(a^2 - u^2)) = theta + C = arcsin(u/a) + C
Hence, the integral of du/sqrt(a^2 - u^2) is arcsin(u/a) + C, where a is a constant and C is the constant of integration.
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The Screaming Salamanders, a new rock band, released their new music video early for subscribers of their fan page. When the video was released to the public, it already had 2,642 views. One day later, the number of views increased to 3,963, and the band expects that the number of views will continue to grow each day. Write an exponential equation in the form y=a(b)x that can model the total number of views, y, x days after the music video was released to the public. Use whole numbers, decimals, or simplified fractions for the values of a and b.
The exponential equation is y = 2,642(2.5)^x. x represents the number of days.
What is a function?
A function in mathematics from a set X to a set Y assigns exactly one element of Y to each element of X. The sets X and Y are collectively referred to as the function's domain and codomain, respectively. Initially, functions represented the idealized relationship between two varying quantities.
Given that a video was released to the public, it already had 2,642 views.
One day later, the number of views increased to 3,963.
The number of viewers after one day is ( 3,963 + 2,642 ) = 6,605
Assume that the exponential function y = a(b)^x represents the number of viewers. x represents the number of days.
Putting x = 0 and y = 2,642 in y = a(b)^x:
2,642 = a(b)⁰
a = 2,642
Putting x = 1 and y = 6,605 in y = a(b)^x:
6,605 = a(b)¹
Putting a = 2,642:
6,605 = 2,642(b)¹
b = 6,605/2,642
b = 2.5
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Use the model to find the missing number in the pair of equivalent expressions.
15 + 9 = ?(5 + 3)
What number is missing from the expression?
Answer:
3
Reasoning:
\(3(5+3)=15+9\)
Distribute three to the numbers to get 15+9.
Step 1: Calculate the measures of center for Mrs. Hampton's data in the dot plot (round your answer to the nearest tenths place). Show your work and briefly explain each step. (Measures of Center are the Mean and Median of a data set)
*dot plot is shown in the attachment below
Answer:
Mean = 6.3
Median = 6
Step-by-step explanation:
Measures of centre, mean and median, can be calculated as follows:
First, bear in mind that each dot represents a value in the data set.
==>Mean:
Mean is the sum of all values in the data set divided by the number of data set we have.
The sum can be calculated as follows:
0 (1) = 0
4 (3) = 12
5(8) = 40
6(3) = 18
7(1) = 7
8(5) = 40
9(2) = 18
10 (3) = 30
Sum = 0+12+40+18+7+40+18+30 = 165
No of data set = 26
Mean = 165/26 = 6.346 ≈ 6.3 (nearest tenth place)
==>Median: this is the middle value in the data set. Since the number of data set is even number (26) , the middle value lies between the 13th and 14th data points. The average of the 13th and 14th data points will give us the median value.
Thus, the 13th and 14th values are both 6.
Therefore, median = (6+6) ÷ 2 = 6
Answer:
The mode is 5, because 5 occurs 8 times, which is more than any other numbers occurring more than once. The median is 6, and this is because when you line up the numbers in order and cross them off to find the middle number, it is 6. I rounded to the mean to about 6.4. I got this by adding all of the numbers up, or by doing 12 + 40 +18 +7, etc, and got the total of 165. Because there is a total of 26 data points, I divided those numbers and got 6.3461, which ends up rounding to 6.4.
Step-by-step explanation:
change wording
A walking tour of Washington, D.C., costs $20 per person. Show that the relationship between the number of people in a tour group and the total cost is a proportional relationship. Write an equation for the relationship.
The Total cost for a tour group consisting of n number of people is 20n
What is an equation?An equation is an expression that shows the relationship between two or more numbers and variables.
Let T represent the total cost if a tour group consisting of n people
Since A walking tour of Washington, D.C., costs $20 per person. Hence, for n number of people:
Total cost = $20 per person * n persons = 20n
The Total cost for a tour group consisting of n number of people is 20n
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Help please I’ll love you forever
Answer:
The answer is 135 I'm pretty sure.
Step-by-step explanation:
It seems very reasonable for it to be 135
clabber company has bonds outstanding with a par value of $101,000 and a carrying value of $97,900. if the company calls these bonds at a price of $95,500, the gain or loss on retirement is:
Given:
Face value = $101,000
Carrying value = $97,900
Bonds call price = $95,500
Find:
Gain or loss on retirement = ?
So, the formula to find the gain or loss on retirement is:
Carrying value – bonds call price
Substituting their values, we get:
$97,900 - $95,500
= $2,400
The journal entries are:
Dr Bonds payable $101,000
Dr Gain on retirement of bonds $1,200
Cr Cash $95,500
Therefore, you gained $2,400 on retirement.
To add, when a bond is retired at any time before its maturity date, it is said to be retired early.
Based on this model, we can say that accounting for bonds retired at maturity is pretty straight forward: the company pays out cash and removes the bond payable from its balance sheet.
evie and elliette are selling cups of lemonade for $0.75 each. if the amount of money they make, m, selling c-cups of lemonade is modeled using a function, then explain why 2 will not be part of this functions range
Answer:
Answer in explanation
Step-by-step explanation:
if the price per cup is $0.75, then the amount of money made from selling c cups will be;
m = $0.75c
the reason why 2 will not be part of this functions range is because, 2 is not exactly divisible by 0.75
What this means is that 2/0.75 will not give a whole number
And since the number of cups sold is a while number, no fractional sales, then y will not have a value of $2
Given: line m represented by
Y= 3/4x + 2
Match each of the following equations to the term that accurately described its relationship to line m.
Answer:
Neither, Perpendicular, Parallel, Neither
Step-by-step explanation:
Parallel lines have the same slope.
Perpendicular lines have slopes that are negative reciprocals.
Select the correct answer.
Which pair of functions is not a pair of inverse functions?
O A.
6
=
f(x)=** 1 and g()=63–1
=
1 x
OB.
f(x)=-124 and g(I) =197+4
1 x)
O c. f(x)= 35 and g(x)=57
OD. f(x)=1 7 20 and g(x)= 1-1
-
19
=
I +
205
=
t
The pair of functions that are not inverse functions is (f(x) = -124, g(x) = 197 + 41x).
Explanation:
To determine if a pair of functions are inverse functions, we need to check if the composition of the two functions in either order results in the identity function, which is denoted as f(g(x)) = x or g(f(x)) = x.
For option (a), f(x) = 6 and g(x) = 1/3x, we have f(g(x)) = f(1/3x) = 6, and g(f(x)) = g(6) = 2x. Neither of these compositions result in the identity function, so this pair of functions is not inverse functions.
For option (b), f(x) = -124 and g(x) = 197 + 41x, we have f(g(x)) = f(197 + 41x) = -124, and g(f(x)) = g(-124) = (124 + 197)/41. Since these compositions do not result in the identity function, this pair of functions is not inverse functions.
For option (c), f(x) = 35 and g(x) = 57 - x, we have f(g(x)) = f(57 - x) = 35 + x and g(f(x)) = g(35) = 22. Since neither of these compositions result in the identity function, this pair of functions is not inverse functions.
For option (d), f(x) = 17/20 and g(x) = 1 - 19x/20, we have f(g(x)) = f(1 - 19x/20) = 17/20 and g(f(x)) = g(17/20) = 1 - 19(17/20)/20 = 1/20. Since neither of these compositions result in the identity function, this pair of functions is not inverse functions.
Therefore, the pair of functions that is not inverse functions is (f(x) = -124, g(x) = 197 + 41x).
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Find the product 1. 61 X 63
The product of 1. 61 and 63 gives 101.43
4d+8+3y+7 simplify your answer
Answer:
add 8 and 7= 4d + 3y + 15
Step-by-step explanation:
trust me :)
a return train ticket between liverpool and london costs £117.50
the price decreeses by 5%
what is the new price?
Answer:
5% of 117.50 is 5.875
117.50- 5.875= 111.625 => round it to two decimal places.
£111.63
Hope this helps :)
can someone help me please
Answer:
a) interior angle: 156°
b) exterior angle: 24°
Step-by-step explanation:
b)The sum of the exterior angles of a convex polygon is 360°. Then the exterior angle of a regular 15-gon will be ...
360°/15 = 24°
__
a)The interior angle of a convex polygon is the supplement of the exterior angle at that vertex. For an exterior angle of 24°, a regular 15-gon will have an interior angle of ...
180° -24° = 156°
_____
Additional comment
We find it easier to work this problem by finding the exterior angle first. Note that the results only apply to a 15-gon in which all interior angles are congruent.
Can Somebody please help
The train was scheduled to arrive at 7:15 p.m. It arrived 2 hours and 10 minutes late. Find the time the train arrived?
Answer:
they trained arrived at 9:25pm
Answer:
9:25
Step-by-step explanation:
7:15 + 2 hours and 10 minutes
the difference of two numbers is 9 and they are in the ratio 4:7.find The numbers
\(\huge\underline{\red{A}\blue{n}\pink{s}\purple{w}\orange{e}\green{r} -}\)
Given - the difference between two numbers is 9 and the numbers are in the ratio of 4:7To find - the numbersLet the number be 4x and 7x respectively !
Then ,
\(\bold{7x - 4x = 9} \\ \\ \bold{\longrightarrow \: 3x = 9} \\ \\ \bold{\longrightarrow \: x = \cancel\frac{9}{3}} \\ \\ \bold{\longrightarrow \: x = 3}\)
therefore ,
first number = 4x = 4 × 3 = 12
second number = 7x = 7 × 3 = 21
hope helpful ~
The difference of two numbers is 9 and they are in the ratio 4 : 7. Find the numbers.
❖ Explanation -:In this question we are provided with the ratio of two numbers that is 4 : 7 and it is also given that the difference between two numbers is 9. We are asked to calculate the two numbers.
\( \small \purple{ \underline{ \underline{\rm{ First \: we \: will \: form \: an \: equation }}}}\)
Let us assume the number as 4x and 7x.
It is given that the difference is 9
According To Question
\( \small \blue{\sf{7x - 4x = 9}}\)
\( \small \green{ \underline{ \underline{\rm{ Now \: we \: will \: solve \: this \: equation \: and \: find \: the \: value \: of \: x}}}}\)
Let us solve this equation
\( \small\sf{7x - 4x = 9} \)
\(⟹ \small\rm{3x = 9} \)
\(⟹ \small\rm{x = \dfrac{ \cancel{9} \: \: 3}{ \cancel{3}} } \)
\( \small\sf{x = 3} \)
Substitute the value of x = 3
7x = 7 × 3 = 21
4x = 4 × 3 = 12
Hence the two numbers are 21 and 12.