The sum of the digits of a two digit number is 9. if the digits were reversed, the new number would be 9 more than the original number. find the original number.

Two triangular faces of a rectangular pyramid each have an area of 7.8 cm2 and the other two faces each have an area of 16.5 cm2. If the area of the base is 60 cm2, what is the total surface area of the pyramid?

What is the expression that represents a factorization of 32m+56mp

the population P of a bacteria culture is modeled by P=4300e^kt, where t is the time in hours. If the population of the culture was 5800 after 40 hours, how long does it take for the population to double?

An airplane has an air speed of 520 mph with a heading of 215 degrees. Find the plane's ground speed and course if it encounters the following winds. A.) A headwind of 32 mph. B.) A tailwind of 32 mph.

Distributive property equations what is (1+9n) 10=-91

Seven people are seated in a row. they all get up and sit down again in random order. what is the probability that the two people originally seated at the two ends are no longer at the ends after they sit down again

Five-X=12 what does x=?

Joseph had 380 heartbeats in 4 minutes how many heartbeats did he have in 15 minutes

What is the answer for m+12=10

Kerion can make 12 necklaces in 2 hours how long will it take for her to make 10 necklaces