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4 years ago

Which could be the name of of a point? A.)1 B.)M C.)t D.)m

Mathematics

1 answer:

pishuonlain [190]4 years ago

5 0

B.)M is the correct answer I thons , because mostly we use capital letters for naming points.

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If 3x + 7 = 19, find the value of 4x + 1. 4x + 1 =

Mkey [24]

X=4
4(4) + 1 =
16 + 1= 17
the answer is 17

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3 years ago

What is the value of (-4) (-8)? A -32 B -12 C 3 D 32

frozen [14]

Answer:

d the negatives canceled each other out making it positive

6 0

4 years ago

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If A, B, and C are collinear, and AB = 18, AC = 41, what is a possible measure of BC?

ikadub [295]

Step-by-step explanation:

As ANC are collinear,

AB+BC=AC

so,

18+BC = 41

BC = 41-18

BC = 23 is the answer.

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4 years ago

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Melanie has $64 in her checking account. She writes a check for $75. What is Melanie's checking account balance after writing th

Darina [25.2K]

Answer:

if adding its 139 if u subtract then its 11

Step-by-step explanation:

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4 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