Write an equation to find how long it will take for the mass of the radioactive substance to reach 27grams.

Artie needs to save $450 to buy the new bicycle that he wants. He currently has $300. What percent of the cost of a new bicycle has he saved? Claire decides that to solve this problem by setting up a proportion.

Mr. martin has 25 students in his class. 15 of his students are girls.

Find the radius of a sphere with a surface area of 2826 m3

Kayla wrote a three digit number the value of the digit in the hundredths place is 600 the digit in the tenths place is 3 less than the digit in the hundreds place the sign of all three digits is 12 what is Kayla's number

Dr. Drazzle colloect 70 l of ocean water to test for antibacterial properties he splits the water into 100 samples how much water is in each sample?

In a hypothesis test if the research question is, "do the data indicate that the mean is different from a specific value?" then is the hypothesis test a two-tail, left-tail, or right-tail test?

Will's bedroom is 12, feet long and 8 feet wide. His closet is half the length and half the width of his bedroom. What is the area of Will's closet floor?

Solve on the interval [0,2pi) 1 + sin 0=1/2

How to divide fractions with letters

What is 4 to the 3rd power