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2 years ago

What do you think I should do to find the y value?

Mathematics

1 answer:

iogann1982 [59]2 years ago

3 0

Answer:

OK so finding the y value is real easy this is the equstion to find it m = [y1 - y2] / [x1 - x2] If you know x, you can solve for y to find the y value for the slope of the line. I hope this helped

~Cornasha_Weeb

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Let f(x)=x2−2x−4 . What is the average rate of change for the quadratic function from x=−1 to x = 4?

goblinko [34]

Answer:

The average rate of change for f(x) from x=−1 to x = 4 is, 1

Step-by-step explanation:

Average rate A(x) of change for a function f(x) over [a, b] is given by:

$A(x) = \frac{f(b)-f(a)}{b-a}$

As per the statement:

$f(x) = x^2-2x-4$

we have to find the average rate of change from x = -1 to x = 4

At x = -1

$f(-1) = (-1)^2-2(-1)-4 = 1+2-4 = -1$

and

at x = 4

$f(4) = (4)^2-2(4)-4 = 16-8-4 = 4$

Substitute these in [1] we have;

$A(x) = \frac{f(4)-f(-1)}{4-(-1)}$

⇒ $A(x) = \frac{4-(-1)}{4+1}$

⇒ $A(x) = \frac{5}{5}$

Simplify:

A(x) = 1

Therefore, the average rate of change for f(x) from x=−1 to x = 4 is, 1

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2 years ago

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7.8x = 32.76<br><br><br> Show your work

castortr0y [4]

Answer:

x=4.2

Step-by-step explanation:

7.8x = 32.76

/7.8 /7.8

x=4.2

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2 years ago

Find the value of h(-7) for the function below.

vovikov84 [41]

Answer:

B. 138.7

Step-by-step explanation:

Put the given number where the variable is and do the arithmetic.

h(x) = 5.7 -19x

h(-7) = 5.7 -19(-7) = 5.7 +133 = 138.7

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I think the answer is A. Common

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Tasya [4]

Answer:

51,750

Step-by-step explanation:

45,000x.03=1,350

1,350x5=6750

45,000+6750=51,750

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