If 5c-2b=15 and 3b-4c=12, what is the value of b+c?

(a) - 27

(b) - 3

(c) 8

(d) 27

(e) cannot be determined with the information given

A scientist measured the wavelength of an X-ray as 0.0000000065 meters. Write the number in scientific notation.

Find the product of each pair of complex conjugates. (3+8i) (3-8i) =

7 (28) = 7 (20 + 8) explanation

12. A professional running track has two straight sections that are each 328.084 feet long. The total distance around the track is 1,312.34 feet. What is the length of the part of the track that is not straight?

What is the decimal form of 17%?

Gloria is making teddy bears. She is making boy and girl bears. She has enough stuffing to create 50 bears. Let x represent the number of girl bears and Y represent the number of boy bears.

Tile costs $28 per square meter. how much will it cost to cover the counter top with new tile? (4.36 square meters)

What are the solutions of the equation? c2 - 10c = 0 A. 1, B. 0, - 10 C. 0, D. 0, 10

What is the best description of an isolated system?

Two exterior angles of a triangle measure 135° and 100°. What are the measures of the interior angles of the triangle?