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3 years ago

Select all the equivalent ratios of 8:12... 7:21 20:30 5:15 2:3 16:24 and 1:3

Mathematics

1 answer:

Bond [772]3 years ago

4 0

8:12 is 2/3 and so is 16:24, 2:3, and 20:30

Step-by-step explanation:

For example (includes simplified problem solving),

8 ÷ 4 = 2

12 ÷ 4 =3

You would want to divide the numerator and denominator by the greatest common factor (GCF)

The ratio 8:12 can be reduced to its lowest terms by dividing both terms by the GCF

Therefore 8:12 is 2:3

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3 years ago

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3 years ago

A sphere and a cylinder have the same radius, and the height of the cylinder is equal to its radius; which figure has the greate

disa [49]

Answer:

The sphere has the greatest volume

Step-by-step explanation:

First note down the formula for volume of sphere and that for volume of a cylinder

Volume of a cylinder

$=\pi r^2h$

Volume of the sphere

$=\frac{4}{3} \pi r^3$

Now from the question, the radius of the cylinder and sphere are equal.In addition, the radius of cylinder is equal to its height.This means that the radius of the sphere, the radius of the cylinder and the height of the cylinder are all equal

Hence,

lets take the radius of cylinder to be= x units

The radius of the sphere will be =x units

The height of the cylinder will be= x units

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$V=\pi r^2h=\pi *x^2*x=\pi x^3$

Calculate the volume of the sphere

$V=\frac{4}{3} *\pi *r^3=\frac{4}{3} *\pi *x^3=\frac{4}{3} \pi x^3$

Comparing the volumes

The volume of the sphere is more than the volume of cylinder.If you take the value of x=1 then

Volume of sphere will = 4.189 cubic units

Volume of cylinder will= 3.142 cubic units

8 0

3 years ago

What is the result when the number 8 is decreased by 25%?

const2013 [10]

8 - Percentage decrease =

8 - (25% × 8) =

8 - 25% × 8 =

(1 - 25%) × 8 =

(100% - 25%) × 8 =

75% × 8 =

75 ÷ 100 × 8 =

75 × 8 ÷ 100 =

600 ÷ 100 =

6

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3 years ago

What is the answer to 5x10?

mixas84 [53]

5 X 10 = 50 , Hope this helps :)

7 0

3 years ago

Read 2 more answers