Harriet is 5 years younger than her brother Charlie. If their ages sum to 37 years, how old is Harriet? Currently stuck on this question and would be greatly appreciated if i got some help. Thanks!

Assume that y varies inversely with x. if y=1.6 when x=0.5 find x when y=3.2

Atown recently dismissed 5 employees in order to meet their new budget reductions. the town had 5 employees over 50 years of age and 19 under 50. if the dismissed employees were selected at random, what is the probability that exactly 2 employees were over 50? express your answer as a fraction or a decimal number rounded to four decimal places.

What is the frequency of the sinusoidal graph?