How do you isolate the variable in 3x=9

Mary had 5 nickels in her bank her dad gave her 4 more nickels how many nickels does Mary have now

8:2 (2+2) = X What is the value of x?

4y - 3x - 2y 11 x - 2 x

Simplify fully 12/30

At first an athlete jogs at 4 miles per hour and then jogs at 8 miles per hour, traveling 10 miles in 1.5 hours. How long does the athlete jog at each speed? (hint: let t represent the amount of time the athlete jogs at 4 mph. Then 1.

If (x + 1) (x - 3) = 5, then which of the following statements is true?. x + 1 = 0 or x - 3 = 0. x + 1 = 5 or x - 3 = 5. x - 4 = 0 or x + 2 = 0

14kg is equal to many Ib

The number of people arriving for treatment at an emergency room can be modeled by a Poisson process with a rate parameter of four per hour.

The file size of an electronic book is 3.6 megabytes. What is the file size of 18 of these electronic books? 21.6 megabytes 48.6 megabytes 64.8 megabytes D. 71.5 megabytes

Sand has $200. She writes six checks for $19.80 what expression describes the change in her bank account, Also what is her account balance after the checks are cashed?