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3 years ago

Calculate the rate of change

Mathematics

2 answers:

Phoenix [80]3 years ago

8 0

Answer:

The rate of change is 6.

Step-by-step explanation:

Using the point slope form we know that y-y1/x-x1

so 12-6/2-1

this gives 6/1 which is 6.

vaieri [72.5K]3 years ago

5 0

Answer:

Step-by-step explanation:

y= 6, 12 , 18, 24, 30

x= 1, 2, 3, 4, 5

Hope this helped!

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3x + 8y + 13x ??? please help

GrogVix [38]

Answer:

3x+8y+13x= 16x+8y= 8×(2x+y)

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2 years ago

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PLEASE ANSWER THIS MATH QUESTION FOR THOSE MATH LOVERS :)

viva [34]

Remark

The general formula for these types of questions is

(x1 + k(x2 - x1) ) , (y1 + k(y2 - y1))

Problem 1 -- Point G

Givens

(x1,y1) is the starting point which in this case is (-3, -3)

(x2,y2) is the ending point which in this case is (6 , -3)

k = 1/4

Sub and solve

(-3 + 1/4(6 - - 3), - 3+ 1/4(- 3 - - 3)

(-3 + 1/4(9) , - 3 + 1/4 (-3 + 3)

(-3 + 9/4, -3 + 1/4(0) )

(-12/4 + 9/4 , -3)

(-3/4 , - 3) Answer

Problem 2 Point F Much harder

Givens

(x1,y1) = (-3 , -1)

(x2,y2) = (6, - 3)

k = 3/4

Sub and solve

(-3 + 3/4(6 - - 3) , -1 + 3/4(-3 - - 1) )

(-3 + 3/4(9) , - 1 + 3/4(-2) )

(-3 + 27/4 , -1 - 6/4 )

(-12/4 + 27/4, -4/4 - 6/4)

( 15/4 , - 10/4) <<<<<< Answer Part B

4 0

3 years ago

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Find the average rate of change f(x)=x^2−6x+8 when x2=1 and x1=3

sergeinik [125]

Answer:

Average rate of change for given function is: -2

Step-by-step explanation:

Given function is:

$f(x)=x^2-6x+8\\x_12= 1\\x_1 = 3$

In order to find the rate of change, we have to find the value of function on x1 and x2

So,

$f(x_1) = (3)^2-6(3)+8 = 9-18+8 = -1\\f(x_2) = (1)^2-6(1)+8 = 1-6+8 = 3$

The formula for finding the rate of change is:

$Rate\ of\ change = \frac{f(x_2)-f(x_1)}{x_2-x_1}$

Putting the values, we get

$=\frac{3-(-1)}{1-3}\\=\frac{3+1}{-2}\\=\frac{4}{-2}\\= -2$

Hence,

Average rate of change for given function is: -2

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3 years ago

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PLZZZZ HELPPPPPP THIS IS TIMEDDDD!!!! *look at picture*

Kazeer [188]

Answer:

Height of the building = 50.8 ft

Step-by-step explanation:

A person and a building are casting the shadows at the same time of the day.

Triangles formed by the person and his shadow and the building and its shadow will be similar.

Therefore, corresponding sides of the similar triangles will be proportional.

$\frac{x}{28}=\frac{5.8}{3.2}$

x = $\frac{5.8\times 28}{3.2}$

x = 50.75

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3 years ago

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A bicycle that Brinley wants costs B dollars. This week the bicycle is being marked down 30%. Write two expressions that represe

kirill115 [55]

Answer:

Part A:

Expression 1: 0.7B

Expression 2: B - 0.3B

Part B:

$504

Step-by-step explanation:

Part A:

Original price: B

B is 100% of the price. The discount is 30%.

100% - 30% = 70%

After the discount, the price is 70% of the original price.

70% of B is the same as 0.7B

Expression 1: 0.7B

Original price: B

Discount: 30% of B

Discounted price = B - 30% of B = B - 0.3B

Expression 2: B - 0.3B

Part B:

Use Expression 1 to calculate the price.

0.7B = 0.7 * $720 = $504

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3 years ago