Why does a number with an exponent of zero equal one?

On four exams, Wallace's grades were 79,93,91, and 68. What grade must he obtain on his fifth exam to have an 80 average?

Suppose a group of x people rent a log cabin for $320 for a weekend in the mountains and plan to share the cost equally. If one person in the group decides not to go, each remaining person has to pay an extra $16.

How could you use the Pythagorean Theorem in life

Identify the system of inequalities that is represented by the graph

Show your work and check answer. -3x=5x+8

An elephant can run 1/4 of a mile in 36 seconds how fast can that elephant run in mph

the flagpole cast an 8 foot shadow, as shown in the table. At the same time the oak tree cast a 12 foot shadow. How tall is the oak tree? And the flagpole height is 20 ft

There is three fourths of a box of cereal remind you eat 2/5 of the remaining cereal what fraction of the box do you eat

Penelope wants to buy two necklaces, one for his sister and one for herself. The necklace for her sister cost $42.00, and the necklace for herself costs $28.00. The sales tax on the purchases is 8%.

Which of the following expressions is true? A. 43 • 45 < 412 B. 52 • 53 > 55 C. 32 • 34 = 32 D. 52 • 54 = 58 I think that it's C, but I want to make sure.