It's a math riddle

"When I was 4 my brother was half my age, If I'm 18 now, how old is my brother?

The area of a mirror is 225 square inches, and its width is 13 3/4 inches will the mirror fit in a space that is 15 inches by 16 inches? explain

If it were possible to eat a hamburger every minute of every day day and night with ought stopping how many years would it take to eat a billion burgers

Two angles are complementary if the sum of their measures is 90°. find two complementary angles such that one of the angles is 78° less than 2 times the other angle. (round to two decimal places if necessary.)

A sandwich costs $0.75 more than a container of milk. A customer buys 4 sandwiches and 4 containers of milk. The customer pays $7.00. What is the cost of a sandwich?

Simplify the product. 2n (n^2 + 3n + 4)

Work shift consist of 8 hours. What fraction of employees work shift is represented by 2 hours?

Let the sample space represent all the values from 1 to 10. Let A = {1, 2, 8} and B = {2, 7}. What is the P (A ∩ B) ?

If you eat too much, you will fall ill. Is that a noun adjective or adverb clause sentence?

A pail holds 2 3/4 gallons of water how much is this in cups

a flat rectangular piece of aluminum has a perimeter of 64 inches. the length is 10 inches longer than the width. find the width