Answer: 1,733,760
Step-by-step explanation:
The number of combinations of selecting m things from n things is given by :-

Given : There are 21 mathematics majors and 129 computer science majors at a college.
Then, the number of ways to pick 4 representatives, so that 2 are mathematics majors and the other 2 are computer science majors :-

Hence, the number of ways to pick 4 representatives, so that 2 are mathematics majors and the other 2 are computer science majors =1,733,760
Answer:
isosceles triangle. two sides equal
i.e 90°
90-34=56
Answer:
What is x? I will tell you the answer in the comments!! Thank you!!
2x^2 - quadratic - monomial
-2 - constant - monomial
3x - 9 - linear - binomial
-3x^2 - 6x + 9 - quadratic - trinomial