Keith spent half of his allowance going to the movies. He washed the family car and earned 7 dollars. What is his weekly allowance if he ended with
14 dollars ?

Which best explains why this triangle is or is not a right triangle?

Which of the following could be the ratio of the length of the longer leg 30-60-90 triangle to the length of its hypotenuse? check all that apply. a. 313 6 b. 3: 215 c. 18: 13 d. 1: 13 e. 13: 2 of. 3: 15

Prove that the value of the expression 7^8–7^7+7^6 is divisible by 43.