Question

Evaluate 9 ÷ 3[(20 − 7) − 2²].

0.18
0.34
27
51

Answer 1

Am I right with B?

Answer 2

@carmelle

Answer 3

youve been right so far- youre most likely correct on this one too

Answer 4

Lets use PEMDAS

`(Parentheses, Exponents, Multiplication, Division, Addition, Subtraction)`

What would you get?

Answer 5

which is 13

Answer 6

2(2) which is 4

Answer 7

9/3 which is 3

Answer 8

13 - 4

Answer 9

which is 9

Answer 10

WAIT

Answer 11

its 27

Answer 12

um.. yes it 27 but let me help~

ok so 9÷3 = 9/3

so \[\frac{ 9 }{ 3 }(20−7−2^2)\]

simplify...

\[\frac{ 9 }{ 3 }(20−7−4)\]

Now we have to multiply each number by 9/3

so...
\[= (\frac{ 9 }{ 3 }) ( 20 ) + (\frac{ 9 }{ 3 }) ( − 7 ) + ( \frac{ 9 }{ 3 }) ( − 4 )\]


Does that make sense so far?

Answer 13

If it does, what do you get when you multiply?

Answer 14

Ohhhh ok it makes sense

Answer 15

i forgot about that last part

Answer 16

yea so wut do you get after multiplying all that?

Answer 17

60 + -21 + -12?

Answer 18

yeah... so basically what is 60 - 21 - 12

Answer 19

27

Answer 20

Okay, i get it thank you

Answer 21

Yep that correct, so the answer is 27 and NOT 0.34 :)

Answer 22

Alright