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Mathematics 20 Online
OpenStudy (anonymous):

Help !!!!!!!!!!!!!!!!!!!!!!!

OpenStudy (anonymous):

OpenStudy (igreen):

PEMDAS

OpenStudy (igreen):

Do the parenthesis inside the bracket. \(\sf (9 - 1) = ~ \! ?\)

OpenStudy (anonymous):

8

OpenStudy (igreen):

Yes, which gives us: \(\sf \dfrac{8 \cdot 3 + 6}{-2[6 \div 2 - 8]}\)

OpenStudy (igreen):

Now do the division in the parenthesis. \(\sf 6 \div 2 = ~ \! ?\)

OpenStudy (anonymous):

3

OpenStudy (igreen):

Parenthesis Exponents Multiplication Division Addition Subtraction.

OpenStudy (igreen):

Yes, so we have: \(\sf \dfrac{8 \cdot 3 + 6}{-2[3 - 8]}\) Subtract 3 - 8

OpenStudy (anonymous):

-5

OpenStudy (igreen):

\(\sf \dfrac{8 \cdot 3 + 6}{-2[-5]}\) Yep, now multiply -2 * -5

OpenStudy (anonymous):

10

OpenStudy (igreen):

\(\sf \dfrac{8 \cdot 3 + 6}{-10}\) Now multiply 8 * 3.

OpenStudy (anonymous):

24

OpenStudy (igreen):

\(\sf \dfrac{24+6}{10}\) Yes, now add it to 6 and divide by 10

OpenStudy (igreen):

My bad, I accidentally wrote -10 above that.

OpenStudy (anonymous):

@iGreen i got 3

OpenStudy (igreen):

Yep, that's our answer.

OpenStudy (anonymous):

ok thank you can you help me with a couple more :)

OpenStudy (igreen):

Sure, just close this and open a new one.

OpenStudy (anonymous):

ok

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