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3 years ago

Can someone answer me I don’t get it

Mathematics

1 answer:

valkas [14]3 years ago

5 0

Answer:

B, C and F

Step-by-step explanation:

Negative numbers go farther and father to the left on a number line the higher in value they get.

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Which equation is the inverse of y = 9x2 - 4?

m_a_m_a [10]

Answer:

The inverse will be:

$y' = \frac{\sqrt{x+4}}{3}$

Step-by-step explanation:

In order to find the inverse of the equation, we do a variable change, since we are finding the inverse, :

$f(x) = 9x^{2} - 4$

$y = 9x^{2} - 4$

$x = 9y' ^{2} - 4$

Now solve for y'.

First add 4 in both sides of the equation and change to the left y'.

$x + 4= 9y'^{2} - 4+4$

$9y'^{2}$ = x + 4

Second divide by 9

$9y'^{2}$ /9 = (x + 4)/9

$y'^{2}$ = (x + 4)/9

Now you will have to clear y, with the square root.

$[tex]y'^{\frac{2}{2}} = \sqrt{x + 4} / \sqrt{9}$ [/tex] =

Simplifying terms

$y' = \frac{\sqrt{x+4}}{3}$

$f^{-1}(x) = \frac{\sqrt{x+4}}{3}$

You can check the answer by doing the evaluation of the following equation:

(f o $f^{-1}$ ) (x)

substitute the equation for y' or inverse function $f^{-1}$

f( $\frac{\sqrt{x+4} }{3}$ )

Now substitue the value into f(x)

You will have

$= 9(\frac{\sqrt{x+4} }{3}} )^{2} - 4\\\\Solving\\\\9(\frac{{x+4} }{9}} ) - 4$

5 0

3 years ago

Find the both term of the arithmetic sequence –27, -24, -21, ...

Irina-Kira [14]

Answer:

-18 is the ans you can calculate it

3 0

2 years ago

You are riding in your car which is traveling at 50 miles per hour. It takes 1 hour to make it to your grandmother's house. How

yan [13]

Your grandmother lives 50 miles away.

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3 years ago

natali 33 [55]

2x i think thats the answer i really dont know

6 0

4 years ago

At a football game, a vender sold a combined total of 219 sodas and hot dogs. The number of sodas sold was two times the number

STatiana [176]

Answer:

73 Hot dogs, 146 sodas.

Step-by-step explanation:

Divide 219 into 3 parts what gives you 73. 2 of the 3 parts were Sodas 1 third was Hotdog.

3 0

3 years ago