Select all that apply. which of the following are proportions? 25/10=5/2,3/4=8/10,2/8=3/12,3/4=15/ 20

is in proportion.

is not in proportion.

is in proportion.

is in proportion.

Step-by-step explanation:

The first example is and it is in proportion.

This is because, you will get the same simplest fraction () from the fraction by dividing its numerator and denominator by 5.

The second example is and it is not in proportion.

This is because, you can not  get the simplest fraction () from the fraction after simplification.

The third example is and it is in proportion.

This is because, you will get the same simplest fraction () from the fraction by dividing its numerator and denominator by 2 and from the fraction by dividing its numerator and denominator by 3.

The fourth example is and it is in proportion.

This is because, you will get the same simplest fraction () from the fraction by dividing its numerator and denominator by 5. (Answer)

hi there!

step-by-step explanation:

a roof pitch is basically for every inch rise there is 12 inches run.

the height of the roof is also known as the rafter.

formula: rafter^2 = rise^2 + run^2

rafter^2 = 5^2 + 12^2

rafter^2 = 25 + 144

rafter ^2 = 169"^2

the height of the roof from the lowest point to the highest point is 169"^2.

hope this : )

your answer is

a.

5

step-by-step explanation: