Write a function that models each variation.

x = 1/3, y = 1/5, and r = 3 when z = 1/2, and z varies directly with x and inversely with the product of r² and y.

Donna had 5 tubes of glitter to use to decorate 3 posters. She used the same amount of glitter on each poster. how many tubes of glitter did donna use on each poster?

9 * 10 to the fourth power - 7 * 10 to the second power

Convert the angle 0=345

What equation has the numbers 7, 5, 6, and 3 and equals 75

Estimate sums and differences of fractions

Marks ratio is 3 tablespoons sugar to 2 tablespoons milk. Sharri is using 4 tablespoons of sugar to 3 tablespoons of milk. Eva is using 9 tablespoons of sugar to 6 tablespoons of milk. Which girl's ratio is equivalent to Mark's?

Aimees karate class lasts 1hr and 15min and is over at 5:00pm what time does aimees karate class start

Dan was 8 years old when his sister was born. Now the sum of their ages is 56. Write an equation to represent this problem. Let the sister's age be s.

If she has 5 dollars and she spends 5 dollars how much does she have

Sorry but my question was wrong. I misspelled a word. So am resubmitting my question How do I find the ratio of the first number to the second and simplify? 0.4 to 1.2