Joe's friends are going to climb a climbing wall and have invited Joe to go with them. Joe is afraid of heights and wants to know how high the climbing wall is before he climbs it. Joe is 5.5 ft tall and at 3:00 pm his shad is 2.75 ft long. At the same time, the shadow of the rock-wall is 35 ft long. How tall is the rock wall?

Rock Wall Height = 70ft

Step-by-step explanation:

Joe's height = 5.5 ft , Joe's shadow height = 2.75 ft  [At 3.30 pm]

At 3.30 pm , Joe's height : Shadow Radio = 5.5 : 2.75 = 2 : 1

So, Product real height : Shadow height = 2 : 1  [At 3.30 pm]

Rock wall shadow height = 35 ft long

As per Height : Shadow ratio = 2 : 1 . So, rock wall real height = 2 x shadow height = 2 x 35 = 70 ft long

99

step-by-step explanation:

5x+40

5(x + 8)

7x - 49

7(x - 7)

18x + 9

9(2x + 1)

15x - 10

5(3x - 2)

step-by-step explanation:

for number one all you have to do is factor 5 out of 5x + 40

for number 2 factor 7 out of 7x - 49

for number three factor 9 out of 18x + 9

for number four factor 5 out of 15x - 10