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Mars2501 [29]
2 years ago
9

Help I need the answer so I won’t fail

Mathematics
2 answers:
Katarina [22]2 years ago
7 0

Answer:

18

Step-by-step explanation:

16-18:(2+1)+2^3

We must use the BEDMAS rules (Brackets, Exponents, Division, Multiplication, Addition, Subtraction)

We must first calculate what's in the brackets:

2 + 1 = 3

So the new expression is:

16-18:3+2^3

Next, we calculate the exponent:

2^3 = 8

So our expression is now:

16-18:3+8

Next we divide:

18:3 = \frac{18}{3} = 6

Our expression is now:

16 - 6 + 8

Then we subtract:

16 - 6 = 10

The new expression:

10 + 8

And finally we add:

10 + 8 = 18

anyanavicka [17]2 years ago
6 0

Answer:

9

Step-by-step explanation:

We have to solve in order to find out if Sam is correct

Remember PEDMAS:

For Multiplication, division and addition, subtraction, do what appears first left to right

Parenthesis

Exponent

Division

Multiplication

Addition

Subtraction

16 - 18 + (2+1)+2^3

Parenthesis first: 2+1 = 3

16 - 18 + 3 + 2^3

Exponent next: 2^3 = 8

Subtraction (it's on the left) : 16-18 = -2

Addition: -2 + 3 = 1

Addition : 1 + 8 = 9

<em>Sam is not correct, the answer is </em><em>9, </em><em>not 16.</em>

Hope this helps :)

Have a great day!

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