If you place a 41-foot ladder against the top of a 40-foot building, how many feet will the bottom of the ladder be from the bottom of the building?

9 feet.

Step-by-step explanation: You can use the Pythagorean Theorem to solve this. If the hypotenuse of the triangle = 41, and one of the legs = 40, you can solve this equation:

41^2 = 40^2 + b^2

1681 = 1600 + b^2

81 = b^2

9 = b

4x and 6y

im not sure though

d. 8

step-by-step explanation:

the given radical expression is:

we can rewrite this as:

we express as square numbers to get;

the exponents will now cancel out to give.

the correct answer is d