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Mathematics 8 Online
OpenStudy (anonymous):

Need help with math. flvs. medal+fan.

OpenStudy (sleepyjess):

what class?

OpenStudy (anonymous):

math .

OpenStudy (sleepyjess):

what grade?

OpenStudy (sleepyjess):

like algebra? or something else?

OpenStudy (sleepyjess):

what is the problem?

OpenStudy (anonymous):

hold on.

OpenStudy (anonymous):

valuate p minus 8 plus p to the second power when p equals ten. fourteen sixty-four one hundred two one hundred forty-four

OpenStudy (sleepyjess):

substitute 10 in for p 10-8+10^2 then use the order of operations

OpenStudy (sleepyjess):

10-8+100 can you do it from there?

OpenStudy (anonymous):

Oh yes !

OpenStudy (anonymous):

102 is the answer, right ?

OpenStudy (sleepyjess):

yes :)

OpenStudy (anonymous):

Eric works for a certain number of hours and receives seven dollars per hour as salary. What does Eric make for working 9 hours? Let h stand for the number of hours Eric worked. The algebraic expression for this is 7 h. fifteen dollars fifty-four dollars fifty-eight dollars sixty-three dollars This is 63. right?

OpenStudy (sleepyjess):

9*7=63

OpenStudy (anonymous):

im not sure about the nxt 1. i think it's 9 Evaluate 6y for y equals 3. 3 9 eighteen nineteen

OpenStudy (sleepyjess):

6*y y=3

OpenStudy (anonymous):

Look at the expression below. 2 + 4xy + 8x + 10 – 3x + 5y a. Rewrite the expression so that like terms are grouped together. b. Simplify the expression

OpenStudy (sleepyjess):

a. 12+4xy+5x+5y Is there any more information for b?

OpenStudy (anonymous):

No ma'am.

OpenStudy (sleepyjess):

Are there answer choices or is it short answer?

OpenStudy (anonymous):

short answer..

OpenStudy (sleepyjess):

That is as much as it can be simplified unless they want something like 4xy+5x+5y=-12.

OpenStudy (anonymous):

Hmm, I'll ask my mom when she gets home.

OpenStudy (sleepyjess):

Oh whoops just figured out what they mean. a. 2+10+8x-3x+5y+4xy b. 12+4xy+5x+5y

OpenStudy (anonymous):

that's the answer ?

OpenStudy (sleepyjess):

Yes the like terms (integers, x values, y values, etc.) are grouped together in the first equation then simplified in the second.

OpenStudy (sleepyjess):

Was that the last question?

OpenStudy (anonymous):

No. I have about 3 more i need help with.

OpenStudy (sleepyjess):

ok

OpenStudy (anonymous):

Simplify by combining like terms. three r plus s plus s plus seven three r plus s plus seven three r plus two s plus seven five r s plus seven twenty-one r s

OpenStudy (sleepyjess):

all of them need simplified? or is the first one what you need to simplify?

OpenStudy (anonymous):

no they're simplified .

OpenStudy (sleepyjess):

If you need to simplify 3r+s+s+7 the answer would be 3r+2s+7.

OpenStudy (anonymous):

Simplify by combining like terms. eight b plus two c plus three minus four b plus five c four b plus seven c plus three twelve b plus seven c plus three four b minus three c plus three twelve b minus three c plus three

OpenStudy (sleepyjess):

8b+2c+3-4b+5c 8b-4b+2c+5c+3 can you try from that?

OpenStudy (anonymous):

I tried. but i don't understand it.

OpenStudy (sleepyjess):

Just combine the like terms 8b-4b=4b 2c+5c=7c 4b+7c+3

OpenStudy (anonymous):

so like add them all together?

OpenStudy (sleepyjess):

yes that will simplify it as much as possible be adding/subtracting like terms

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