Solve by elimination

3x + 5y = - 1

7x - 5y = 31

What is the sum of 1/2 + 1/3 =

2 Enunk had 42 rocks that he wanted to share with his 4 friends. If he gave each friend the member of rocks (and kept the same number of rocks for himself), how many rocks and each person get?

Factor the expression. 4x + 16 The factored expression is

The mean score of a placement exam for entrance into a math class is 80, with a standard deviation of 10. Use the empirical rule to find the percentage of scores that lie between 60 and 80. (Assume the data set has a bell-shaped distribution.)

RSM question need answer today 3-6-20 How much water do you add ... To make 1% sugar syrup using 12g sugar?

Find the percent of the number. 25% of 340

This may be easy but here's a movie mathematics problem for the beginners. There is a population of 50 people watching a halloween movie named "hocus pocus" and another halloween movie named "halloween town" with a population of 70 then the last one

The length of a classroom is 31 feet. What is this measurement in yards and feet. The measurement is how nany yards and how many feet.

When the number is divided by 6 the remainder is five when the number is divided by 7 the remainder is 6 when the number is divided by 9 the remainder is 8 what is the number?

Which of the following is a prime number? A. 27 B. 11 C. 8 D. 4