How to add and subtract rational numbers

John answered 80% of the questions correctly. There were 30 questions on the test. How many questions did John answer correctly?

If 48 men have ration for 16 days how long will the food last if a reinforcement of 16 men arrived

Coach Martinez will order 2 pairs of shorts and 3 shirts for each player. There are 12 members on the team. If each pair of shorts costs x dollars and each shirt costs y dollars, which expression represents the total cost of his order?

If 343 Superscript x Baseline = 49 Superscript 4 minus x, what is the value of x? Five-eighths Eight-fifths 2 8

What is the answer to 5-6

Whats the factors of 3x2+4x+1

Mirele needs to buy fencing to completely surround her backyard pool. How much fencing should she buy? A pool has a length of 31.74 feet and a height of 14.85 feet. 29.70 feet 63.48 feet 66.35 feet 93.18 feet

A clothing store ran advertisements for a special sale. the store ads read buy one at regular price, get a second one for half price. explain how the terms of the clothing store's sale are different from offering a 50% discount.

The numbers 1, 2, 3, 4, and 5 are written on slips of paper, and 2 slips are drawn at random one at a time without replacement. Find the given probabilities. (a) The sum of the numbers is 8. (b) The sum of the number is 6 or less.

How do I Evaluate (2/3) ^5