Lechie has 21 crystals in her collection. Her brother Tomer has 7 crystals. How many more crystals does Lechie have than Tomer?

The area of a triangular block is 100 square inches. If the base of the triangle is twice the height, how long are the base and the height of the triangle?

Do u have algebra answers

Relate a vertical line test to understanding functions. a. Each horizontal line drawn through the graph will intersect a function in only one location c. Each vertical line drawn through the graph will intersect a relation in only one location b.

How do you write a mixed number as a fraction greater than 1

Twice a number increased by 6

What's the greatest common factor of 21 and 33?

Jackson and Israel are going out. Jackson rent a paddle boat that has a flat fee of $10 and $2 every hour after that. Israel rent out a small motorboat coast $4 initially and then $3 every hour after that.

If each student stirred for 25 seconds, what is the total number of seconds that all 25 students stirred?

How to factor 2p^4+9p^3-18p^2

When 23 is subtracted from the square root of three times a number, the result is 16. find the number?