Answer:
h = 19.6 ft
Step-by-step explanation:
Given that,
A 20 ft ladder 4ft from the base of the wall.
The height of the ladder, H = 20 ft
The base distance, b = 4 ft
We need to find the height of the reach. Let it is P.
Using Pythagoras theorem,

or
P = 19.6 ft
So, the height is 19.6 ft.
Answer:
22 days
Step-by-step explanation:
55 divided by 2.5=22 days
Answer:
x=-6
Step-by-step explanation:
7x-9x=6+6
-2x=12
x=-6
Answer:
z = 86
Explanation:
90 - 68 = 12
180 - 78 = 102
102 + 12 = 114
180 - 114 = 86
Answer:
Probably equal to 6 or 7.
Step-by-step explanation: