Using the formula d=rt, which of the following statements is not true
1. if r=3 and t=4, then d=12
2. if r=3 and t=5, then d=8.
3. if r=4 and t=2, then d=8.
4. if r=5 and t=3, then d=15.

Does the problem involve permutations or? combinations? do not solve. the matching section of an exam has 4 questions and 7 possible answers. in how many different ways can a student answer the 4 ? questions, if none of the answer choices can be? repeated?

When a rectangle is dilated, how do the perimeter and area of the rectangle change?

What are the exclude value of mn+3m