If 64 feet of rope weighs 20 pounds how much will 80 feet of the same rope weigh

256 lbs.

Step-by-step explanation:

1 - Divide

64 ÷ 20 = 3.2

1 ft. of rope is 3.2 lbs.

2 - Multiply

80 · 3.2 = 256

80 ft. or rope will be 256 lbs.

25 pounds

Step-by-step explanation:

the weight of 1 ft = 20/64 pounds

If 1 ft weighs = 20/64 pounds, then

80 ft weighs = 20/64 * 80 = 25 pounds

5.5

step-by-step explanation:

the correct option is 2.

step-by-step explanation:

according to the given information triangle abc is a right angle triangle with right angle at a. segment ab is 5 and segment ac is 7. point d is on segment bc and angles adb and adc are right angles.

it is given that triangles abd, cad, and cba are similar.

two triangles are similar if their corresponding sides are proportional.

in triangle cba, using pythagoras theorem

                      )

triangle abd and cba are similar,

                            (2)

triangle cad and cba are similar,

                      )

using (1), (2) and (3), we get

hence proved.

therefore option 2 is correct.