Question

I need help with two problems Im just not getting them at all PLEASE!!! -8 – 52 ÷ 13 x 32 + 5 and
3 + 4[(8 ÷ 2) + 3]

Answer 1

thats not 32 it is -8 -52\13*3^2+5

Answer 2

If you want some more insight, here is a video by Khan
http://www.khanacademy.org/video/order-of-operations?topic=developmental-math-1-1
(and the following 2)

Answer 3

this is about order of operations.

1) start with anything inside parentheses
2) moving from left to right do exponents/multiplication/division FIRST, THEN move to addition/subtraction.

Answer 4

-8-52/13x3^2 + 5
= -60/13x9 + 5
= -60/117+5
= -60/122
=-0.491 round off to -0.50

As for your second question:
3 + 4[(8 ÷ 2) + 3]
3 +4[(4) +3]
3 +4[7]
3 +28
31

Answer 5

-8 -52/13*3^2+5 (so first, we'll do the squaring)

-8 - 52 / 13 * 9 +5 (next, let's do the division)

-8 - 4*9+5 (now, multiplication)

-8 - 36 + 5 (no subtract and add, left to right)

-44 + 5 ((finish it off)

-39

Answer 6

Memorize the order of operations. I used to know a mneomic that helped but forgot it lol

Answer 7

3 + 4[(8 ÷ 2) + 3] (first, parentheses, innermost!)

3 + 4 [(4+3)]

3 + 4(7)
3+28
= 31

Answer 8

how do I Evaluate 4 – 7x for x = -6 how do I do this ?

Answer 9

just subsitute -6 in for everytime you see an X.

so:

4 - 7(-6)

Answer 10

4-7x
So, 4-7(-6)
4+42=46

Answer 11

and then you can solve (remember to do the parentheses first.

4 - (-42)

4+ 42 = 46

Answer 12

see I never went to high school I ended up going to home school for my high school year and now Im in college and trying to learn all this math
:( :(

Answer 13

thank you all you have been a very big help to me :)

Answer 14

do you understand how we worked the problems out?

Answer 15

yes now I do a little bit better my only other one I cant figure out is (6÷ 3) + 4(6÷2)2

Answer 16

that last two is ^2

Answer 17

so would I divid first

Answer 18

\[6\div3+4(6\div2)^{2}\]
like that??

Answer 19

yes

Answer 20

okay, so the first thing to look for are parentheses. this means you have to do the 6 / 2 FIRST!
what is 6/2?

Answer 21

3

Answer 22

good! so now we have this: 6÷3+4(3)^2

next, do the exponenet. 3^2 = ??

Answer 23

6

Answer 24

Answer is: 2+4(3)^2 or 2 +4(9) = 2 + 36 = 38

Answer 25

3^2 = 3*3 = ??

Answer 26

9 right?

Answer 27

yup!

Answer 28

Yes 3^2 is square of 3.

Answer 29

great! so now we have this: 6÷3+4(9)

next, you work from LEFT to RIGHT.... do the division and mutliplication first...

so what is 6/3 = ?? and what is 4*9 = ???

Answer 30

6\3=2 4*9=36 right

Answer 31

awesome. now you can put it all together. 2 + 36 = ?? and that's your answer!

Answer 32

38

Answer 33

great! did that make sense?

Answer 34

yes it did thank you so much !!!!!!!!!

Answer 35

no problem.