PLEASE HELP GIVING OUT BRAINLEST A 21-foot ladder is leaning against the side of a building and is positioned with its base 10 feet from the building. How far above the ground does the top of the ladder touch the building? Round your answer to the nearest foot.

1. which of the following algebraic equations is equivalent to ? x^n = a a^n = x a^x = n x^a = n 2. 16^1/4= 1/2 2 4 3. (-36)^1/2= -6 1/6 no real number 4. 8^2/3= 4 8 16√2 )^5/2= 7,776 1/7,776 no real number 6. m ^ the square root of a^2m simplified is: 7. the square root of 3^3 times the square root of 2 simplified and in radical form is:

Write the pair of fractions as a pair of fractions with a common denominator

Idon't get undoing if its pass adding and subtracting so can someone ? x-2 over 5 = 18