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3 years ago

10

Enter your answer as a decimal. Round ONLY your final answer to the nearest tenth.

2 answers:

Anastaziya [24]3 years ago

4 0

I hope this helps you

PQ^2=9^2+14^2-2.9.14.cos20

PQ^2=81+196-236

PQ^2=41

PQ~6,4

Mumz [18]3 years ago

3 0

In order to solve this this problem, you first need to know the formula of a triangle which is b×h/2 (First measure the bottom of the triangle and find how long that is and then measure the height of the triangle and do the same thing. Then multiply both of those measurements together and with your answer divide it by two.) And of course your answer should be a decimal, so if you need help with entering your answer as a decimal or rounding to the nearest tenth or any other problem that I can hopefully answer, you can send me a message on brainy. Good luck!
(I put a picture of an example of how to find the area of a triangle) Click on the image to enlarge just in case you can not see the whole picture.

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If f(x)=1/6x+12, then f^-1(x)=<br> PLEASE HELP

Finger [1]

$f(x)=\dfrac{1}{6}x+12\to y=\dfrac{1}{6}x+12$

Change x to y, and y to x.

$x=\dfrac{1}{6}y+12$

solve for y:

$\dfrac{1}{6}y+12=x\ \ \ |-12\\\\\dfrac{1}{6}y=x-12\ \ \ \ |\cdot6\\\\y=6x-72$

Your answer is:

$f^{-1}(x)=6x-72$

5 0

2 years ago

18 miles is what percent of 24 miles?

Gekata [30.6K]

Answer:

3/4

Cause there are 3 sixes in 18 and 4 sixes in 24

4 0

3 years ago

Analysis of an accident scene indicates a car was traveling at a velocity of 69.5 mph (31.1 m/s) along the positive x-axis at th

STatiana [176]

We can find the acceleration via

${v_f}^2-{v_i}^2=2a\Delta x$

We have

$\left(5.20\dfrac{\rm m}{\rm s}\right)^2-\left(31.1\dfrac{\rm m}{\rm s}\right)^2=2a(115\,\mathrm m)$

$\implies\boxed{a=-4.09\dfrac{\rm m}{\mathrm s^2}}$

Then by definition of average acceleration,

$a_{\rm ave}=\dfrac{v_f-v_i}t$

so that

$-4.09\dfrac{\rm m}{\mathrm s^2}=\dfrac{5.20\frac{\rm m}{\rm s}-31.1\frac{\rm m}{\rm s}}t$

$\implies\boxed{t=6.33\,\mathrm s}$

We alternatively could have found the time without knowing the acceleration. Since acceleration is constant, the average velocity is

$v_{\rm ave}=\dfrac{x_f-x_i}t=\dfrac{v_f+v_i}2$

Then

$\dfrac{115\,\rm m}t=\dfrac{5.20\frac{\rm m}{\rm s}+31.1\frac{\rm m}{\rm s}}2$

$\implies\boxed{t=6.33\,\mathrm s}$

7 0

3 years ago

Write the sentence as an inequality.

Bogdan [553]

Answer:

1/2y > 22

Step-by-step explanation:

This can also be written as

y/2 > 22

and

0.5y >22

Hope this helps!

6 0

2 years ago

Sophia sells makeup brushes for b dollars. For

mel-nik [20]

C.0.25
Meaning 25% 25 divide one hundred
Therefore answer is 0.25

5 0

2 years ago