How many combinations with repetition are allowed if n = 7 and r = 2? a. 21
b. 14
c. 49
d. 28​

Match the term on the left with its image or description on the right. match term definition diameter a) circle a and a line segment connecting points b and c which are on the circle. circumference b) circle a and a line segment connecting points b and c which are on the circle. radius c) a piece of the circumference of a circle secant d) two circles that share the same center. concentric circles e) the distance around a circle arc f) a segment between two points on a circle that passes through its center

Which best explains why this triangle is or is not a right triangle?

Henry is an avid reader, he devours 90 pages in half an hour how many pages has henry read per minute?