2 years ago

Find the solution(s) of the following equation. x2 = 81

Mathematics

1 answer:

SSSSS [86.1K]2 years ago

8 0

The answer is C. 9 times 9 is 81

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Dima020 [189]

Answer:

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Step-by-step explanation:

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2 years ago

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Sue's teacher asked her to find 42.6 divided by ten to the power of two. How many places and in which direction should Sue move

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Hey You!

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The graph shows the ages of different concertgoers who have backstage passes.

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Please help!!!!!!!!!!

Delicious77 [7]

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

Substitute the values of x to the equation of the function f:

$x=-1\to f(-1)=2(-1)^2-4(-1)+1=2(1)+4+1=7\\\\x=2\to f(2)=2(2^2)-4(2)+1=2(4)-8+1=1$

Therefore we have two points (-1, 7) and (2, 1).

We can calculate the slope of line l.

The formula of a slope:

$m=\dfrac{y_2-y_1}{x_2-x_1}$

Substitute:

$m=\dfrac{1-7}{2-(-1)}=\dfrac{-6}{3}=-2$

<h3>Answer: A) -2.</h3>

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2 years ago