Answer:
9 is your answer
Step-by-step explanation:
Remember to follow PEMDAS (Parenthesis, Exponents (& roots), Multiplication, Division, Addition, Subtraction). Remember to also follow the left -> right rule.
Solve:
8 - 2 x 3 + 7
First, Multiply -2 and 3 together
8 + (-2 x 3) + 7
8 - 6 + 7
Next, follow the left to right rule, subtract.
(8 - 6) + 7
(2) + 7
Finally, Add
2 + 7
9
9 is your answer
~
Answer:
42
Step-by-step explanation:
6*6+9-2-1
36+9-2-1
45-2-1
43-1
42
The answer is three significant figures. The 1 and the 7 are both significant, because they are non-zero quantities.
This is where significant figures gets a little more complicated, because if a zero is used as a placeholder (i.e. 0.00027 cm) then it is insignificant.
But in the case above, the zero isn't being used as a placeholder, and thus, is significant.
Answer:
3.16(i think)
Step-by-step explanation:
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