in a mixture of concrete, there are four lbs of cement mix for each pound of gravel. if the mixture contains a total of 130 lb of these two ingredients, how many pounds of gravel are there?

6 tenths equals how many ones

a box contains ten cards labeled q, r, s, t, u, v, w, x, y, and z. one card will be randomly chosen. what is the probability of choosing a letter from q to t

10x5 hundreds place value

Latoya, Milan, and Hong served a total of 154 orders Monday at the school cafeteria. Latoya served 10 more orders than Milan, Hong served 4 times as many orders as Milan. How many orders did they each serve?

Marty's favorite Hawaiian pizza is made up of a ratio of 7 to every three pieces of ham

Scott took out a 72 - month loan for 42000 to put a new pool in his background. If the simple interest rate is 6.75% how much will he pay in total?

What is the product of (8.8 * 10^6) (5 * 10^2) ?

Find the two positive numbers that satisfy the given requirements: "The sum is S and the product is a maximum."

Write an equation of the line that passes through (7,10) and is perpendicular to the line y=1/2x-9.

3 pounds of trill mix put into 8 bags equally what will each bag have