3rd grade math explain how you know if a number can be divided by 10 evenly

Brianna is twice as old as James. David is four times as old as James. Brianna is 20 years younger than David. How old is David?

What the percent of 126 is 12

A wire is first bent into the shape of a rectangle with width 4in and length 14in. Then the wire is unbent and reshaped into a square. What is the length of a side of the square?

How do you do Arithmetic operations: fractions?

How do you find x and y in a similar triangle

John has $1 in a savings account that earns 5% interest compounded annually to he nearest cent how much interest will he earn in 3 years

Solver the inequality - 8<2x-4<4

What is {3x[7x2] - (7x6) }

What are the coordinates of D when quadrilateral is reflected across the line y = x

You randomly draw a marble from a bag of marbles that contains 888 blue marbles, 555 green marbles, and 888 red marbles.