Me with this question.

fyi: this question is worth a lot of points but answer it correctly, i do not need wrong answers.

24

Step-by-step explanation:

Let's say that R, N, and M are the ages of Ric, Nancy, and Michael in 1980.

We can write three equations:

R = 2N

N = 2M

(R + 12) + (N + 12) + (M + 12) = 78

Simplify the third equation:

R + N + M + 36 = 78

R + N + M = 42

Substitute the first equation:

2N + N + M = 42

3N + M = 42

Substitute the second equation:

3(2M) + M = 42

6M + M = 42

7M = 42

M = 6

Therefore:

N = 12

R = 24

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 : )