3 years ago

I NEED HELP FAST!!!!!!!

Mathematics

2 answers:

AysviL [449]3 years ago

8 0

Answer:

I believe it is the second one

Step-by-step explanation:

Elza [17]3 years ago

6 0

Answer:

6r+10

Step-by-step explanation:

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Step-by-step explanation:

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3 years ago

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3 years ago

What is the answer of −7x+1=−20

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Answer:

Step-by-step explanation:

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4 years ago

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Find a unit vector in the direction of the vector left bracket Start 3 By 1 Matrix 1st Row 1st Column negative 8 2nd Row 1st Col

MrRissso [65]

Answer:

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

Step-by-step explanation:

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

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

Unit Vector, $\hat{a}=\dfrac{\overrightarrow{a}}{|\overrightarrow{a}|}$

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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4 years ago

2 Simplify -3(16 = 35+4)/5. Show your work.

Masteriza [31]

Answer:

-9

Step-by-step explanation:

Parentheses first:16-35+4 = -35+16+4 = -35+20 = -15

3(-15) = -45/5

-45 divided by 5 = -9

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3 years ago