I need a full explanation on - (i^2)

I know it equals 1, but how?

Lea wants to put a fence around her garden is measures 14 feet by 15 feet she as 50 feet of fencing how many more feet of fencing does lea need to put a fence around her garden

Express 2 as power of 2

Simplify the following: 4.5x10 raise to the power of - 16 / 9.0x10 raise to the power of 5

Samara ran around the park loop that was 1/3 mile long. she ran around the loop nine times. samara says she ran 9/3 miles. her brother mike says she ran 3 miles. who is correct?

Write the following amounts in numerals: 1. forty-one and three hundreds 2. seventy-two thousandths 3. five and eight tenths 4. six and three thousandths 5. one hundred two thousandths 6. four hundred three thousandths 7. two and two hundredths 8.

56,00 rounded to 1,000

What is the variance of the values 8,10,14,12?

Simplify the expression. 3 (x 3) - 2x 4

Suppose that $2000 is loaned at a rate of 15.5%, compounded semiannually. Assuming that no payments are made, find the amount owed after 9 years. Do not round any intermediate computations, and round your answer to the nearest cent

Sam bought 2 3/4 pounds of shrimp and 2 1/2 pounds of crabmeat. How much seafood did he buy?