A straight ladder of length 7.1 m rests against a vertical wall. A person climbing the ladder should be "safe" as long as the foot of the ladder make s an angle of between 70° and 80°with the horizontal ground. Determine the minimum and maximum heights hat the ladder can safely lie against the wall.

answer: when you burn wood, the carbon reacts with the oxygen in the air to create ash and smoke. that is a permanent change you cannot undo that.

step-by-step explanation:

to find the perimeter of the rectangle this is the expression:

x-9+x-9+3x-4+3x-4=138

if we simplify it:

8x-26=138

remember, 138 is what it all adds up to

the length is 11.5cm

the width is 57.5cm

the area is 661.25cm^2

the answers might not be correct use at own risk