Find the missing angle of the triangle with angle measurements of 75º and 80º. What is the missing angle? Explain how you found your answer.

2x+3y=12 x-y=6 solve the following system equations

Asimple random sample of size nequals14 is drawn from a population that is normally distributed. the sample mean is found to be x overbar equals 70 and the sample standard deviation is found to be sequals13. construct a 90% confidence interval about the population mean

Prove that the sum of two consecutive exponents of the number 5 is divisible by 30.if two consecutive exponents are 5n and 5n + 1, then their sum can be written as 30.