PLEASE HELP When Grayson does 8 push-ups and 9 sit-ups, it takes a total of 34 seconds. In comparison, he needs 56 seconds to do 8 push-ups and 20 sit-ups. How long does it take Grayson to do each kind of exercise?

Assume that a population of 50 individuals has the following numbers of genotypes for a gene with two alleles, b and b: bb = 30, bb = 10, and bb = 10. calculate the frequencies of the two alleles in the population’s gene pool.

If there is no real number solution to the quadratic equation x^2+2x+c=0 what is a possible value of c? 1 -2 0 3

Adj has a total of 1075 dance and rock songs on her system. the dance selection is 4 times the size of the rock selection. write a system of equations to represent the situation.