What is the sum of the first nine terms of the geometric series where a1 = 7 and r = - 3?

There is an integer n such that 2n2 - 5n + 2 is prime. To prove the statement it suffices to find a value of n such that (n, 2n2 - 5n + 2) satisfies the property "2n2 - 5n + 2 is prime.

Benchmarks to estimate 2.81+3.72=

How many unit tiles need to be added to the expression x2 + 4x + 3 in order to form a perfect square trinomial

A cylindrical well is 25 meters deep and has a diameter of 1.8 meters. Approximately how many cubic meters of soil were dug out to make the well? (Use π = 3.14.) 10.17 cubic meters 21.19 cubic meters 63.59 cubic meters 70.65 cubic meters

In the equation x=y2, what is the unit rate?

Mackenzie deposited $68 into a bank account that earned 4.3%

Can 21 go into 30 how many times

school buses use diesel fuel, which is an efficient and clean form of petroleum. One school has 60 buses. Each school bus carries 34 students. if all of the school buses are full how many students are on the school buses

Where is 10 in the real number system

What is the area of a rectangle with 5/12 foot and 2/3 foot? A 7/36 B 7/15 C 10/36 D 15/24