What is the result of adding these two equations?

-2x + 7y = - 5

- 2x - 4y = 6

In a batch of 860 calculators, 9 were found to be defective. What is the probability that a calculator chosen at random will be defective? Write the probability as a percent. Round to the nearest tenth of a percent if necessary.

By which angle is a pentagon

2. Perform the calculations 11540+5972 in BCD arithmetic.

9x+8y=6 -7x=14 what is the system of equation by elimination?

Translate (N-5) * 7 turn into verbal statement

Work out m and c for the line y=x-5

Calculate mean, median, and mode for each set of data. IQ's: 78, 79, 87, 88, 101, 120, 132

Katelyn is 4.35 feet tall. Her older sister is 1.6 feet taller. How tall is Katelyn's older sister

Jade and jason play a game which each player is equally likely to win the first player win 3games becomes the champion and no future games are played if jason had won The first game what is the probability that jason becomes the champion

What is 257,650 rounded to the nearest ten