What is the solution to the system of linear equations y-x=4 and y+2x=1?

Simplify 8g^7h^-3/2g^4h^8

How do I solve the problem you buy 3 t-shirts and 2 pairs of shorts for 42.50. Your friend buys 5 t-shirt and 3 pairs of shorts for 67.50. Use a system of linear equations to find the cost of each t-shirt.

In the list of numbers, 6, x, 10, 2, 7, 13, and 15, the median is 10. Which of the following could NOT be the value of x? (A) 9 (B) 10 (C) 11 (D) 13

What is 25% of $500.00? I think the answer is $475.00 Can someone verify if twenty five percent of 500.00 is $475.00

The fourth graders were going to the museum for a field trip. They had to divide the students into 6 groups of 15. Each group also needed 2 chaperones. If the admission to the museum was $1.

2³⁰+2³⁰+2³⁰+2³⁰+2³⁰ = ? what is the value?

How to identify the factors in the expression 6 (x+5)

Find the sum 12/13 + ( - 1/13)

Evaluate the expression, if x=4, y=9, and z=7. x (y + z - 3 squared)

Jade measured the height of an art frame as 5.23 feet, but the actual height was 6 feet. What is the percent of error in Jade's measurement? 12.83% 13.55% 14.72% 15.55%