A bag contains purple marbles and red marbles, 55 in total. The number of purple marbles is 7 more than 5 times the number of red marbles. How many purple marbles are there?

Anne and Maria play tennis almost every weekend. So far, Anne has won 12 out of 20 matches. How many matches will Anne have to win in a row to improve her winning percentage to 75%?

Find the balance in each account after the given period. $8000 principal earning 5% compounded annually, after 6 yr

Quadratic equations that can be solved using the quadratic formula can also be solved by factoring ...?

Susan's uncle from Japan promised to give her 41 g of gold. The local jewelry exchange will buy gold for $1286 per ounce.

The price of an item selling at 150% of its $63 value is

What is the decimal expansion of this fraction? 15/2

What variable is isolated

jeff bungee from a 8 story building. each story was 15 4/5 feet in height? how tall was the building?

The rectangular bar is connected to the support bracket with a 10-mm-diameter pin. The bar width is w = 70 mm and the bar thickness is 20 mm. Each side of the bracket has the same dimensions as the bar.

A miniature horse weighs 228 fewer kilograms than a Shetland pony. Use the table to find the weight of a Shetland pony. Miniature horse wights 53kg