How much pure acid is needed to mix with 18L of 30% acid to increase the concentration of 50% acid

Solve for y. 3 (y-3) = 6y

How do you do this step by step - 7 (-3n+3) = -21+21n

Gary wants to read a 307 page book in ten nights. On the first night, he read 30 pages. If he wants to read the same amount each night that remains, how many pages should he read each night?

in a group of 140, 92 watch tennis 81 play a sport and 40 do neither find the probability that an adult chosen at random from those who watch tennis does not play sport if correct free brainy and follow or sub on any platform

Brenda is making bracelets that each use three 6 inch. strips of leather. she wants to make 6 bracelets. how many strips of leather does Brenda need.

Estimate the width of a field that has an area of 6,000 square meters and a length of 118.5 meters

What is 8 10/27-1 2/9?

Anna is a sales person who has jobs this week in cities within North Carolina and South Carolina. On a map, these two cities are 50 centimeters apart. The map uses a scale of 2 centimeters = 4 kilometers.

How many ways can you write 5^8 as a quotient of two exponential term

Cual es el valor de la cifra numero 2