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3 years ago

Which operation should be performed first for calculations involving more than one arithmetic operation?

Mathematics

2 answers:

jeka943 years ago

8 0

Hi!

When following the order of operations, A. Parantheses (or brackets) come first. =)

nekit [7.7K]3 years ago

7 0

Answer:

A. Parentheses.

Step-by-step explanation:

We are asked to find the operation that should be performed first for calculations involving more than one arithmetic operation.

We use order of operations (PEMDAS) to solve a problem involving more than one arithmetic operation.

P = Parenthesis,

E = Exponent,

M/D = Multiplication or Division (Left to right)

A/S = Addition or subtraction (Left to right)

Therefore, we should remove parenthesis first in calculations involving more than one arithmetic operation.

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Step-by-step explanation:

Let be $\vec u = (2,-3)$ , its unit vector is determined by following expression:

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The unit vector in component form is $\hat{u} = \left(\frac{2}{\sqrt{13} },-\frac{3}{\sqrt{13}} \right)$ or $\hat{u} = \frac{2}{\sqrt{13}}\,i-\frac{3}{13}\,j$ .

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