i need help with this quiz!

Question

anonymous · Answer

attachment

anonymous · Answer

am i correct with going with b?

nuke_ur_friend · Answer

yes you are right it is B.) lol

anonymous · Answer

what about on this one with a? did i multiply wrong?

jigglypuff314 · Answer

the restriction would be that you cannot divide by zero or have a zero in the denominator
so solve for m and n when  6 m^5 n^2 = 0
and those would be your restrictions :)

nuke_ur_friend · Answer

no id think so

anonymous · Answer

wait
thats the wrong one

anonymous · Answer

attachment

anonymous · Answer

thats the correct one

jigglypuff314 · Answer

you are correct :)

anonymous · Answer

i need help with this next one i dont know if  i just have to divide to finish it, i think its b

jigglypuff314 · Answer

B is correct :)

nuke_ur_friend · Answer

u are correct lol

anonymous · Answer

:) ok i guess i learned more than i though, i have 3 problems left then if you can double check my answer for 1 and 2 i would be very grateful :) 


i know that x + 1 would cancel out and so would the 9

anonymous · Answer

and because of that i think i would be left with 4 so i think my answer would be "c" am i correct?

jigglypuff314 · Answer

I Don't think it would be C because the 2/4 should simplify...

anonymous · Answer

that would be a 1/2

jigglypuff314 · Answer

yes, so the denominator would Not be a 4 like in C

anonymous · Answer

so because x + 9 is left behind and it should have a 2 as a denominator the answer should be "b" is there any proof to this?

jigglypuff314 · Answer

B would be correct :)

anonymous · Answer

can you show me how i would be left with x + 9 on top?

jigglypuff314 · Answer

you would simplify the 2/4
and you can cross out the (x+1) and the (x-9)

anonymous · Answer

oh then it would be 1(x+9) and that would just be x+9

jigglypuff314 · Answer

yep :)

anonymous · Answer

:) ok this one is dealing with fractions

jigglypuff314 · Answer

multiply top and bottom by 18
so you get    (3+2) / (9-1) =

anonymous · Answer

5 and 8

anonymous · Answer

so 5/8 would be my answer

jigglypuff314 · Answer

yep :)

anonymous · Answer

:) ok what about this one

jigglypuff314 · Answer

multiply top and bottom by 7c   so
$$\frac{ (8)(7c) + (3)(7) }{ (2)(7c) + 3 }$$

anonymous · Answer

56 c + 21     
---------
14c + 3          ? i wouldnt multiply 3 by seven either right?

jigglypuff314 · Answer

in the numerator the 3/c times 7c would equal 3 times 7 when the c's cancel out
in the denominator the 3/7c times 7c would equal just 3 when the 7c's cancel out

anonymous · Answer

ah i see

jigglypuff314 · Answer

and I had made a slight transcription error
it was supposed to be subtraction in the numerator
so 56 c - 21

anonymous · Answer

so my final answer would be "c"

jigglypuff314 · Answer

yep :)

anonymous · Answer

Thank you i just want to be sure on 2 other problem i worked before hand to be sure they are correct :)

anonymous · Answer

in my book it said ( for the first problem) that if both variables equal zero the denominator would so if one = 0 then it would be 0  no matter what is my answer correct?

jigglypuff314 · Answer

both are correct :)

anonymous · Answer

thank you, lol i only missed one :)

anonymous · Answer

dang i have to wait for my teacher to open the test on her end to see what i missed lol

jigglypuff314 · Answer

well, glad I could help :) feel free to tag me if/when you need any help :D

anonymous · Answer

i will :)  Thank you

anonymous · Answer

i will tag you when they get the site fixed lol, can you see your smart score?

jigglypuff314 · Answer

I can't see any smartscores :P
but mine's above a 70 by now if that was what you were wondering :)