What is the result of adding these two equations?

-2x + 7y = - 5

- 2x - 4y = 6

Simplify: 7x + 3 - 6y - 4x - 5 + 5y

What is 2+2-0-0-0-0-0-0-0-0-0-0

If rain is falling at a rate of 2.56 inches per hour, how much rain would you expect after 3.75 hours

What are the zeros of the function? f (b) = b ^2 - 16b + 64

Last summer 37% of a farmer's cherry tree crop was destroyed from a rate tree virus. If the farmer had 2,700 cherry trees at the beginning of the season, how many trees remain? A. 790 B. 970 C. 999 D. 1701

On three examinations, Dana received scores of 84, 89, and 78. What score does Dana need on the fourth examination to raise his average to 85?

You have a Spanish meeting every forth day and a math club meeting every tenth day. Today you have both meetings. In how many days will you have both meetings on the same day again?

5.2 turned into a fraction in simplest form.

A certain laptop is really popular and sells for $199.99. Since sales are so good, the store raises the price by 13%. What is the cost of the laptop after the markup?

Which statement is correct? (2.06 times 10 Superscript negative 2 Baseline) (1.88 times 10 Superscript negative 1 Baseline) less-than StartFraction 7.69 times 10 Superscript negative 2 Baseline Over 2.