The product of a number and -8, decreased by 13 is less than or equal to 27 how would this be written out?

A20? -foot ladder is placed against a vertical wall of a? building, with the bottom of the ladder standing on level ground 19 feet from the base of the building. how high up the wall does the ladder? reach?

Evaluate 3(a + b + c)squared for a = 2, b = 3, and c = 4. a. 54 b. 243 c.729 add solution .

Write the expression as a single natural logarithm. 2 in a - 4 in y