The ages of Joey and his two brothers add up to 38.One brother is 3 years old than Joey. The second brother is 5 less than two times Joey. How old is Joey?

Two large and 1 small pumps can fill a swimming pool in 4 hours. One large and 3 small pumps can also fill the same swimming pool in 4 hours. How many hours will it take 4 large and 4 small pumps...

f(a) = Incorrect: Your answer is incorrect. f(a + h) = Incorrect: Your answer is incorrect. f(a + h) − f(a) h =   I need help determining what...

I do not understand how they got 5/2. I get 2/5.

some people do a 6 works in 60 days but more people joined the work and the work is now finished in 40 days. Find the number of people who work at the beginning?

​Giuseppi's Pizza had orders for ​\$537.00 of pizzas. The prices were ​\$19 for a large​ pizza, ​\$15 for a medium​ pizza, and ​\$11 for a small pizza. The number of large pizzas was two less than three...

Bini planted A 4 feet tall tree next to 150 feet tall tree. The small tree grows 2 feet a month and the talk tree grows 0.75 feet a month. How many months it takes them to reach the same height?...

h(x − 1) = h(1/x) = I need help with plugging this in and finding the answer. I am very confused.

I need the answers and help to find out the answers and setting up the problems.

I need step-by-step instructions on how to solve this equation.

- comment on a range of effects -identify and analyse language use -identify and analyse both sentence structure and text structure.   at least a page

f(a) = 4/a+6 f(a + h) = 4/a+h+6 f(a + h) − f(a) /h= ?   I need the answer and help plugging in the equation for the last one.

Use the standard normal distribution or the​ t-distribution to construct a 90​% confidence interval for the population mean. Justify your decision. If neither distribution can be​ used, explain why...