Ally has 30 quaters. The ratio if her quarters to dimes is 2:3 and the ratio of her dimes to nickels is 5:3. How many nickles does ally have

If you use your office computer 40 hours per week, and do not unplug the computer when it is not in use, how much carbon dioxide is produced from the "vampire energy" used by the computer in one year?

Solve the inequality by addition or subtraction f + 9 < = - 23 - by subtraction f + 9 < = - 23 f + 9 - 9 < = - 23 - 9 f <=-32

On average, a refrigerator door is opened 38 times each day. len has two refrigerators in his house based on this, about how many times in a 3-week period are the refrigerator doors opened?

Which set of numbers is in the solution set for this inequality? 3x > 15 A) {3, 4, 5, 6} B) {4, 5, 6, 7} C) {5, 6, 7, 8} D) {6, 7, 8, 9}

Convert 15/9 to a mixed number and reduce the fraction

The yearly sales of candles decreased from 560 to 476. By what percentage did the candle sales decrease?

12345678910 Which expression shows 12 more than the quotient of 63 and 9. A) 12 + 63 : 9 B) 12 + 9 : 63 C) (12 + 63) : 9 D) (12 + 9) : 63

What is the domain of f (x) = cos (x) ?

Mike and Kim invest $14,000 in equipment to print yearbooks for schools. Each yearbook costs $7 to print and sells for $35. How many yearbooks must they sell before their business breaks even?

What is the solution to the system of equations? Use the substitution method. j + k = 3 j - k = 7 A. The solution is (8, 1) B. The solution is (5, - 2) C. There is no solution. D. There are an infinite number of solutions.