Y is inversely proportional to x

when y=7, x=9

a) work out an equation connecting y and x

b) work out the value of y when x=21

Average rate of change for f (x) = 2^-.25 x sin (3.14159/2x)

Yesterday, Bethany sent 60 messages. She said 15% of them were to her best friend. How many text messages did Bethany send to her friend yesterday

Rectangular Washington County measures 15.9 miles by 9.1 miles what is the county's area

38 2/5 divided by 100

Gymnast Clothing manufactures expensive soccer cleats for sale to college bookstores in runs of up to 500. Its cost (in dollars) for a run of x pairs of cleats is: C (x) = 2950 + 6x + 0.1x2 (0 ≤ x ≤ 500).

Malcolm is driving 1,323 miles from Wichita to Charleston for a family reunion. He drives 443 miles the first day and 409 miles the second day. Round each distance to the nearest ten and estimate about how many miles Malcolm has left to drive.

What's an example of an integer word problem in addition?

Each person on a boat ride pays $26 for a ticket. There are 63 passengers. How much money is collected from all the passengers?

Let the random variable x have a discrete uniform distribution on the integers 8 ≤ x ≤ 10. determine the mean, μ, and variance, σ2, of x.

What is answer to this equation 7x-4=2