Solve this system of equations using the addition method.

5x + 2y = 19

x - 2y = - 1

2 diamond rings and 4 silver rings cost $1440. a diamond ring and a silver ring cost $660. how much does a silver ring cost?

What is the absolute value of positive 7

Janet bought a $40 blouse for $25. What is the discount rate (% of change) ?

The three sides of a triangle measure 9.97 meters, 10.1 meters, and 0.53 meter. what is the distance around the triangle

Solve for x x^2-18x+81=0

What is the n term of 1 8 15 22 29

Whatvis the standard form of two hundred ten million sixty four thousand fifty?

What is the slant height of a square pyramid that has a surface area of 279 square meters and a side length of 9 meters?

Cooking and shopping Forty-five percent of Americans like to cook and 59% of Americans like to shop, while 23% enjoy both activities. What is the probability that a randomly selected American either enjoys cooking or shopping or both

Which of the following is equal to 4 and 1 over 2 divided by 2 and 2 over 3? 4 and 1 over 2 times 2 and 3 over 2 9 over 2 times 8 over 3 9 over 2 times 3 over 8 41 over 2 times 3 over 22