What is 3.9 x 10^33 x 1.55 x 10^7

How many solutions does this system have? 5x - y = 3 2y = 10x + 2 a. one b. two c. an infinite number b. no solution

Sherlyn makes $10 per hour babysitting and $5 per hour gardening she wants to make at least $80 a week but I can work no more than 12 hours a week (linear equations)

The cost to mail is $5 for the first 2 pounds and 40 cents for each additional ounce.

A high school has 16 math teachers for 1856 math students. What is the ratio of math teachers to math students?

Which factorization is equivalent to this expression? - 42k - 54

A television that was originally marked $199.95 is now 25% off. Write a linear expression for the new cost of the television. Then calculate the sale price of it. A. c - 0.25c; $49.99 B. c + 0.25c; $249.94 C. c - 0.25c; $149.96 D. c + 0.25c; $149.96

What's the addictive inverse of 4x - 5

A stack of boards is 21 inches high. Each board is 1 and 3/4 inches thick. How many boards are there?

There are 90 students in Grade 5, and 10% of them were absent today. In Grade 6, 15% of the 80 students were absent today. What was the total number of students in the two grades who were present today?

Solve for x: 4 (3x + 12) = - 36 x =