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3 years ago

5

Harold has four classes each school morning each class is an hour long and there is 10 minutes between classes the first class s

tarts at 8 AM what class is the fourth class end

1 answer:

Y_Kistochka [10]3 years ago

3 0

The 4th class ends at 12:40

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What is the value of x in the equation 5x+ 3 = 4x?<br> A.-3<br> B.- 1/3<br> C.1/3<br> D.3

Elina [12.6K]

Answer:

-3

Step-by-step explanation:

5•-3=-15

4•-3=-12

-15+3=-12

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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

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

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3 years ago

A water hose had filled up 1/8 of a pool after 1/2 of an hour. At this rate, how many hours would it take to fill the pool.

GenaCL600 [577]

4 hours. You would multiply 1/8 by 1/2 and get 4.

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3 years ago

Name three numbers between 3.65 and 3.66

Dmitry_Shevchenko [17]

Three numbers between 3.65 and 3.66 could be:

1) 3.651
2) 3.655
3) 3.657
4) 3.659

Hope this helps! :)

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3 years ago