What is the probability of getting 3 heads if 6 unbiased coins are tossed simultaneously?

How can you find the conditional probability of a given b as the fraction of b’s outcomes that also belong to a, and interpret the answer in terms of the model? i just need a good explanation

Find the zeros of the function. write the smaller solution first, and the larger solution second f(x)= (x+6)^2-49

Solve with work both bert and ernie received an increase in their weekly salaries. bert's salary increased from $520 to $520. ernie's salary went from $580 to $645. find the percent of increase for each salary. what was the larger of the two percents ?