You have 6 Scrabble tiles with different letters of the alphabet in a bag. If you select 3 tiles,

1 answer:

4 0

The answer is C. 120

The solution can be derived by the formula 6P3.

6P3 = 6 * 5 * 4 = 120

120 different combinations can be made with the condition.

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Determine whether the vectors u and v are parallel, orthogonal, or neither.

Natalija [7]

$\mathbf u\cdot\mathbf v=\|\mathbf u\|\|\mathbf v\|\cos\theta$

where $\theta$ is the angle between the vectors. You have

$10\times9+6\times5=\sqrt{10^2+6^2}\sqrt{9^2+5^2}\cos\theta\iff \cos\theta=\dfrac{30}{\sqrt{901}}\implies \theta\approx1.909^\circ$

The vectors would be orthogonal if the dot product had been zero, but that's clearly not the case.

They would be parallel if the angle turned out to be $0^\circ$ or $180^\circ$ , but that's also not the case.

So the answer is neither.

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3 years ago

Please help question in the picture

zubka84 [21]

Its 56 I DID this you could only multiple the straight sides

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3 years ago

What is the slope of a line that passes through -8, -16 and 18, 5?

ddd [48]

Slope formula:

y2 - y1
_____
x2 - x1

5 + 16
_____
18 + 8

21
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26

slope is 21/26

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4 years ago