Alex has 75 buttons. He gives 15 buttons to emma what percent of the button did Alex give to emma? just need help i don't understand what i need to do;-;

Which transformations could have occurred to map △abc to △a"b"c"? a rotation and a reflection a translation and a dilation a reflection and a dilation a dilation and a rotation

Can (2,3 and square root 10) be sides ona right triangle?

In the following situation, determine whether you are asked to determine the number of permutations or combinations. then do the calculation how many ways are there to pick a starting five from a basketball team of twelve members? a. permutation; ps - 2520 b. combination; 1c, - 792 c. combination: 2cs - 2520 d. permutation; ps - 95040