Five times a number is equal to the sum of twice the number and 15. What is the number?

Each of the four sides of a swimming pool measures 9 meters. the pool is 5 meters deep. how much water will be needed to fill it completely? a. 45 cubic meters b. 81 cubic meters c. 225 cubic meters d. 405 cubic meters reset next

The reflexive property of congruence lets you say that ∠pqr ≅

We just started the introduction into circles and i have no idea how to do this.