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3 years ago

Angle x measures 42•. Find measure of angle y.

Mathematics

1 answer:

harina [27]3 years ago

5 0

Answer:

Step-by-step explanation:

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K divide by 6 + 8 = 5

VLD [36.1K]

Answer:

k= -18

Step-by-step explanation:

5 = (k/6) + 8 so 5-8 = k/6

-3=k/6 then -3 multiplied by 6 = k which is -18 = k

-18/6= -3

-3+8=5

5 0

3 years ago

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

Complete the following sentence.<br><br> The slope of the graph of y = x is

Mrac [35]

Answer:

The slope of y=x is 1

Step-by-step explanation:

Slope = 1

7 0

3 years ago

25 pointssss !!!!!!!!!

Reptile [31]

Answer:

Dion needs to add 10% of the solution

4 0

2 years ago

Archie and his friends went scuba diving. Each person recorded his dive depth. If land represents 0, which dive depth is closest

Mariana [72]

-20 feet

that would be the number closest to 0

4 0

3 years ago

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