Express the series using sigma notation. 6 + 9 + 12 + 15.

Find the prime factorization of 180. Express your answer in exponential form

Two 2 1/2 inch plastic strips and two 5 1/3 inch plastic strips are used to form a rectangle. What is the perimeter of the rectangle?

Which of the following expressions are greater than 1? Choose all that apply. A. 1675*5 B. 27*4 C. 33100*3 D. 1233*3 E. 1021*2 F. 319*5

95 children are in the 6th grade 3/5 of them went to a party who many children went to the party in all

If x+3=5, what is the value of 2 (x+4) ?

Which equation forms a pair of linear equations with 9x+12y=48 such that the system has no soulution?

What is the percent of decrease from 155,000 to 140,00

A telephone company charges $0.30 for the first 4 minutes of a call and $0.18 for each additional minute. How long can a person talk for $3

determine if these equations are true or false A. 50 tens x 4 hundreds = 40 tens x 5 hundreds B. 24 x 10 x 90 = 90 x 2400

A shipment of 9 microwave ovens contains 2 defective units. A restaurant buys four of these units. What is the probability of the restaurant buying at least three nondefective units?