For the geometric series 4+20+100+500 what is the value of a3?

A stock investment went up 25% in 2006. Starting at this increased value, what percent would it have to go down in 2007 to be back to its original price at the beginning of 2006? PS The answer is not 25%

A statistics professor wanted to test whether the grades on a statistics test were the same for upper and lower classmen. The professor took a random sample of size 10 from each, conducted a test and found out that the variances are equal.

When will we get out of quarantine?

I have four times as much money as does my brother. Our combined total is d dollar. How much does each of us have?

What do I need to know about geometry proofs on a test?

Find the slope and the y-intercept of the line with equation 9x + 10y = 91.

What is 51/2 * 21/3? A. 132/5 B. 131/6 C. 127/8 D. 125/6

13:Posttest 13:Right Triangle Trigonometry A triangle has side lengths of 10, 24, and 30. What type of triangle is it?

Factor 5xz+10yz completely

Grant paid $12 for 4 baseball card packs. how many baseball card packs can he purchase for $21?