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3 years ago

Help please..................

Mathematics

1 answer:

anygoal [31]3 years ago

7 0

The answer is Either 2 18 or 21

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Pls help <br>_______________

andriy [413]

Answer:

1/2×4 1/2= 4 1/4

Step-by-step explanation:

yan po sana makatulong

6 0

3 years ago

Read 2 more answers

Find the length of this

Keith_Richards [23]

Answer:

Hey there!

We have tan 9= 21/BW

tan 9 (BW)=21

BW= 21/tan 9

BW= 132. 59

Hope this helps :)

4 0

3 years ago

Read 2 more answers

PQ has endpoints at P(7,-11) and Q(-5,-8). Find the slope of segment PQ.

GalinKa [24]

Work shown above! Answer is C

6 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

A tree is 3 ft tall casts a shadow that is 2 ft long. Find the length of the shadow that a 6 ft tree costs.

Anni [7]

Answer:

4 feet

Step-by-step explanation:

Plz brainliest ,Hope I could Help

6 0

3 years ago