Joshua is doing a chemistry experiment that calls for a 30% solution of copper sulfate. He has 40ml of 25% solution. How many millimeters of 60% solution should joshua add to obtain the required 30% solution?

Ramone wrote the following matrix equation. A + (8 - 12 3) = (0 18 - 21) Which explains why Ramone's equation has no solution? There is no number that when summed with 8 equals 0.

What is the solution to the system y = 3/4 x - 12 and y = 4x - 31

What is the best approximation for the circumference of s circle with a diameter of 500km. Use 3.14 to approximate pi. A: 785km B: 1570 C: 3140 D: 3725

How do I solve 7 divided by 6.93

Luis purchased a concert ticket for $17.50. The cost of his hotel was 4 1 2 times as much as his ticket. His dinner was 3 5 the cost of his ticket. How much did Luis spend altogether for the concert ticket, hotel, and dinner?

If the radius of a flying disc is 7.6 centimeters, what is the approximate area of the disc? 23.864 square centimeters

Suppose you select 2 letters at random from the word compute without replacement. Find each probability. P (2 vowels)

5a - 2 (a + 2) simplify the expresion

A gourmet pizza café sells three pizzas three sides of pizza if you buy three sizes it cost 46.24 A medium pizza cost $15.75 and a large pizza cost $17.50 how much does the small pizza cost

William is putting up signs on the edge of the road every 1/16 of a mile. He just put a sign down and he has 7/8 of a mile of road left in which to place his signs. He wants to determine how many more signs he should put on the edge of the road.