Answer:
12 ft
Step-by-step explanation:
The ladder forms a right triangle with the building and the ground, since the ground is perpendicular to the building
Therefore, we can use the Pythagorean theorem:
c2 = a2 + b2
From the information in the problem, c is 20 ft, b is 16 ft, and a is what we solve for:
(20 ft)2 = a2 + (16 ft)2
a = √((20 ft)2 - (16 ft)2) = 12 ft
639 / 5 es equivalente a 127.8
Answer:
x=4
Step-by-step explanation:
Subtract 5x from both sides: -4x+20=4
Subtract 20 from both sides: -4x=-16
Divide -4 from both sides: x=4
Answer:
seven and eight hundred ninety-three ten-thousandths
Step-by-step explanation: