Jeremy’s house is 45 feet wide. In a photograph the width of the house was 2.5 inches, and its height was 2 inches. What is the actual height of Jeremy’s house?

Hello!

We can use proportions to solve for the actual height of his house. Remember, we must convert from inches to feet:

1 foot = 12 inches

45 ×12 = 540 inches

Set up a proportion:

Cross multiply:

2.5 · x = 540 · 2

2.5x = 1080

Divide both sides by 2.5:

x = 432 inches

Convert back to feet:

432 / 12 = 36 feet

7! = 7×6×5×4×3×2

3! = 3× 2

as 7! is multiple of 3! because 7! contains 3! that is 3× 2 as factor

so 7! /(3! ) = 7× 6× 5× 4

= 42 × 20

= 840

its b) 840✌✌✌

dhruv⭐