Hello what is 9c÷3d when c=4 and d=6. we were already told that the answer is not 2.

How much dextrose 70% must be mixed with dextrose 5% to prepare 1,000 ml of dextrose 20%?

Acircle has a circumference of 28.36 units what is the diameter of the circle

Mr. thompson is on a diet. he currently weighs 260 pounds. he loses 4 pounds per month. what part of the story makes the relationship not proportional?