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3 years ago

Please help me asap

Mathematics

1 answer:

Zinaida [17]3 years ago

5 0

The exact form is -15/28 and the decimal form is -0.535

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hannah's school hosted a book donation. there are 150 students at her school, and they donated b books! hannah donated 3 times a

MArishka [77]

3b=150 should be the answer.

8 0

3 years ago

Read 2 more answers

The sector COB is cut from the circle with center O. The ratio of the area of the sector removed from the whole circle to the ar

mafiozo [28]

Answer:

$Ratio = \frac{R^2 - r^2 }{ r^2}$

Step-by-step explanation:

Given

See attachment for circles

Required

Ratio of the outer sector to inner sector

The area of a sector is:

$Area = \frac{\theta}{360}\pi r^2$

For the inner circle

$r \to radius$

The sector of the inner circle has the following area

$A_1 = \frac{\theta}{360}\pi r^2$

For the whole circle

$R \to Radius$

The sector of the outer sector has the following area

$A_2 = \frac{\theta}{360}\pi (R^2 - r^2)$

So, the ratio of the outer sector to the inner sector is:

$Ratio = A_2 : A_1$

$Ratio = \frac{\theta}{360}\pi (R^2 - r^2) : \frac{\theta}{360}\pi r^2$

Cancel out common factor

$Ratio = R^2 - r^2 : r^2$

Express as fraction

$Ratio = \frac{R^2 - r^2 }{ r^2}$

6 0

3 years ago

Please help! I'll give out the brainiest!

gavmur [86]

To find the solution
-4x>36
divide both sides by -4
(REMEMBER WHEN YOU DIVIDE BY A NEGATIVE, THE SIGN FLIPS OVER)
x < -36/4
simplified
x < -9

Hope this helps :)

6 0

3 years ago

Estimate the difference: 3 2/5 - 5/8

svet-max [94.6K]

Answer: 3

Step-by-step explanation: Half of 5 is 2.5 so 3 2/5 will be estimated to a 3 1/2 and 5/8 is very close to 4 which is half of 8. so 5/8 will be estimated to 1/2! Both of them subtracted is gonna be 3 because 1/2 - 1/2 is 0!

Have a great day!

5 0

3 years ago

Can anyone help me with this question?

nexus9112 [7]

Answer:

I Believe its A

Step-by-step explanation:

IM so sorry if its wrong!!!!

but im pretty sure its right

4 0

3 years ago

Please help me asap​

Please help me asap