A group of adults and students were on a class trip to Washington DC. The number of male students with one more than seven times the number of adults. The number of female students was half the number of male students. It’s a total number of people who went on the trip is 80 to find the number of male students and female students

What is the definition of exponential decay?

Angle sum theorem. find z, x,y and w

Statements reasons 1. ab ≅ cd; ad ≅ bc 1. given 2. ac ≅ ac 2. reflexive property 3. △adc ≅ △cba 3. ? 4. ∠dac ≅ ∠bca; ∠acd ≅ ∠cab 4. cpctc 5. ∠dac and ∠bca are alt. int. ∠s; ∠acd and ∠cab are alt. int. ∠s 5. definition of alternate interior angles 6. ab ∥ cd; ad ∥ bc 6. converse of the alternate interior angles theorem 7. abcd is a parallelogram 7. definition of parallelogram what is the missing reason in step 3?