Find the height of the building. Assume that the height of the person is 5 ft.
Touft
building
L
Bft 7
f 1 set

40 ft

Step-by-step explanation:

From the diagram attached which describes the information given, we can assume that there are two similar right angle triangles there.

To find the height of the building, use proportion of their corresponding sides.

Let height of building = x

Thus,

104/13 = x/5

Cross multiply

104*5 = x*13

520 = 13x

Divide both sides by 13 to solve for x

520/13 = 13x/13

40 = x

Height of building = x = 40 ft

sine

step-by-step explanation:

n=9

step-by-step explanation:

7 times a number = 7n

decreased by 13 = 7n-13

same as is =

5 times the number = 5n

increased by 5 = 5n+5

7n-13 = 5n+5

2n=18

n=9