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Mathematics 21 Online
OpenStudy (anonymous):

will give you a medal Evaluate the expression when p=-24 and q=4 p/2q A. –48 B. –3 C. 3 D. 48

OpenStudy (hitaro9):

Okay. So if p = -24 you know that those two are exactly the same thing, so you can put -24 anywhere theres a p, and you can put p anywhere theres a 24.

OpenStudy (hitaro9):

The same is true for q and 4.

OpenStudy (hitaro9):

So, why don't we try that? A number next to a letter means to multiply them, so putting p in for -24 and q for 4 gives us -24 dicided by 2x 4

OpenStudy (anonymous):

Ima give you your medal k

OpenStudy (anonymous):

Thank you for helping me

OpenStudy (hitaro9):

No problem. Do you understand how it works though?

OpenStudy (anonymous):

What is answer?

OpenStudy (hitaro9):

If two things are equal then you can substitute them anywhere

OpenStudy (hitaro9):

It should be fairly obvious at this point. What aren't you getting?

OpenStudy (anonymous):

i just want the answer for my last question i been stuck on this for awhile so i just want answer to get done

OpenStudy (hitaro9):

Why have you been stuck on it? If I can help you understand how to do the problem, then if a similar problem shows up on a test you'll know how to do it.

OpenStudy (anonymous):

look its been a long day for me i have homework then boxing pratice then i have to take care of my sick mother so just give me the answer plz

OpenStudy (hitaro9):

The point of this site isn't for us to do your homework for you, its to help you understand whats going on in your class.

OpenStudy (anonymous):

i know how to do just this problem im stuck on

OpenStudy (hitaro9):

Well what are you stuck on? Do you understand how substituting numbers and letters work? Do you know how mulitplying/ dividing negatives work?

OpenStudy (anonymous):

idk why im stuck on this problem

OpenStudy (hitaro9):

If you just tell me what it is you're having an issue with, I can help you through it.

OpenStudy (hitaro9):

Okay. Try replacing the letters in the equation with numbers, see what that gets you.

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