Help out please!! I need explanation for this question. Topic: Modular Arithmetic. If 7+ y - 4 (mod 8), find the least value of y, 10 ≤ y ≥ 30.​

answer: a.

step-by-step explanation: the answer is a. because, you need to converge the fractions to find a solution.

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 : )