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?

What is the circumference of an circle?

margaret is planning a wedding reception she wants to spend less than her budget of $5,323 and margaret has already spent $2,748 the meal price per guest is $25 how many quests, x, can margaret invite to the reception and stay under budget on a

9x-4x<3+-11-2 how to do this

Paul needs to find 310% of 72. Which expression should he use?

Center (7,-9); radius 3

What is the solution of x+5y=10

There are 4 Board of Directors positions open. 2 will be for men, 2 will be for women. Out of 20 candidates, 11 are men, 9 are women. How many total outcomes are possible?

I can't find the answer to (-50) x47?

What is the exact volume of the cone? (height is 9 cm, the radius is 15 cm) A) 90 n cm 3 B) 675 n cm 3 C) 225 n cm 3 D) 405 n cm 3 What is the approximate volume of the cone? use 3.14 for n.

How to do fractions Equations multiplication and division