Which of the following equations has only one solution?

x^2 - 1 = 0

x^2 + x = 0

x^2 + 4x + 4 = 0

What is the answer for 3/7 plus 1/2

The probability the 72 bus will arrive on time is 0.76. What is the probability that it will be late?

What is the ordinal number just before 152nd?

Does the equation 3 (x-2) = 3x-2 have one solution, no solution or an infinite number of solutions?

Which powers have of value of 81. Possible Answers: 1^81, 3^4, 6^4, 9^2, 27^3.

0.0025 cm << in scientific notation

Which equation represents Jacob's age

A square garden has sides that are 9 yards long. What is the garden's area?

What is 23 to the third power

A monkey is swinging from a tree. On each swing, she travels along an arc that is 75%, percent as long as the previous swing's arc. The total length of the arcs from her first 4 swings is 175m.