4 years ago

Use properties to evaluate 1/3(-15 divied by 1/2)1/4

Mathematics

1 answer:

ZanzabumX [31]4 years ago

4 0

Answer: -2.5

Step-by-step explanation:

-15 divided by 1/2= -30

-30 times by 1/4= -2.5

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Answer:

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Step-by-step explanation:

We are required to find a unit vector in the direction of:

$\left[\begin{array}{c}-8\\7\\2\end{array}\right]$

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The Modulus of $\overrightarrow{a}$ = $\sqrt{(-8)^2+7^2+(-2)^2}=\sqrt{117}$

Therefore, the unit vector of the matrix is given as:

$\left[\begin{array}{c}-\frac{8}{\sqrt{117} } \\\frac{7}{\sqrt{117} }\\\frac{2}{\sqrt{117} }\end{array}\right]$

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Answer:

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