The sum of the ages of Andy and Derek is 50. in 5 years time, the age of Derek will be four times that of Andy now. how old is each boy

Is this correct, if not, what is wrong with it? 2x-x=2

Find the sum of the first 9 terms of the sequence. Show all work for full credit. 2, - 7, - 16, - 25,.

Noah wants to put $1,000 in a savings account with a 1.5% annual interest rate. How much more money will he have after one year if it is compounded monthly versus no compounding? A) $0.10 B) $15.00 C) $1015.00 D) $1015.10

If the probability of a machine producing a defective part is 0.05, what is the probability of finding exactly 5 defective parts from a sample of 100? (Assume that the process follows a binomial distribution and round answer to four places)

How many combinations of three books can be selected from 40 books?

What is 36/2 plus 12/8?

On the last history quiz, Kanesha answered 0.75 of the 20 questions correctly. How many questions did Kanesha answer correctly?

When one New Zealand dollar, NZ$0.77, was worth US$0.77, how much was US$1.00 worth in New Zealand dollars?

Select the letter of the correct answer. Suppose a bucket contains 1,898 sunflower seeds. If this bucket contains 26 times more seeds than another bucket, how many sunflower seeds are in the other bucket?

He radius r of a circle is increasing at a rate of 6 centimeters per minute. find the rate of change of the area when r = 35 centimeters. cm2/min