I can not figure out these two word problems: A restaurant has two neon signs. Both are turned on at the same time and both blink as soon as turned on. One sign blinks every 9 seconds and the other blinks every 15 seconds. In how many seconds will they both blink together again? The school...

7th grade math question. Order of operations. When there is no parantheses do you answer the way it is written ex: 5+10+18x19=627. Is this correct?

I'm 41 and really want to become an RN. What is holding me back is the math. I know basic math. Here in Arizona you need to pass College Algebra in order to get into nursing school. I checked with Sylvan... they don't teach adults. Should this stop me? I'm about half way down with my pre-reqs, but...

The volume of liquid flowing per second is call the volume flow rate Q and has the dimension of ^3/. The flow rate of a liquid through a hypodermic needle during an injection can be estimated with the following equation: Q=((pi)(R^n)(P2-P1))/8NL. The length and radius of the needle are L and R,...