What is the answer to Envelopes are sold in packages of 5o There are 4 large envelopes in each package. How many large envelopes will you get if you buy 200 envelopes? Explain.

In trapezoid efgh, m∠hef=(4x2+16)∘ and m∠gfe=(5x2+12)∘. find the value of x so that efgh is isosceles. i'm desperate.

When you have 25 numbers, and jake picks 3 random numbers and puts them back, what is the chance bob has of picking those 3 numbers when he picks 6 random numbers (without putting them back)? explain.

How can (square root of 25) ^2 be rewritten?