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4 years ago

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Diwhdiwbdiebduebdubrcrubcutbueib. !7/.!7:!,7:!Ugdcurbicidbxjdbxjndxibejbcjrbchrbcjrcjtbvjtbcjfnfjtnfjtngksnxlmexm!!!Ndicnirhfueh

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1 answer:

Katena32 [7]4 years ago

5 0

this is me when people take 20 hours to answer my questions

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What’s the answer to -3 + 47 = 5x + 103

Solnce55 [7]

Answer:

-11.8

Step-by-step explanation:

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3 years ago

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Mixed number eqivalent to 51/5

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51/5 is equivalent to 10 and 1/5.

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4 years ago

Arrange the following number in descending order 0,9; 0,009; 0,09; <br>0,0009 ;9,09

VLD [36.1K]

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9.09 , 0.9 , 0.09 , 0.009 , 0.0009

Explanation:

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2 years ago

Let u = (1, 2 -2), v= (2, 1, 3) and w = j + 4k. a) Find cos theta, where theta is the angle in degrees between u and w.

vodka [1.7K]

Answer: The value of cos theta is -0.352.

Step-by-step explanation:

Since we have given that

$\vec{u}=1\hat{i}+2\hat{j}-2\hat{k}\and\\\\\vec{w}=\hat{j}+4\hat{k}$

We need to find the cos theta between u and w.

As we know the formula for angle between two vectors.

$\cos\ \theta=\dfrac{\vec{u}.\vec{w}}{\mid u\mid \mid w\mid}$

So, it becomes,

$\cos \theta=\dfrac{2-8}{\sqrt{1^2+2^2+(-2)^2}\sqrt{1^2+4^2}}\\\\\cos \theta=\dfrac{-6}{\sqrt{17}\sqrt{17}}=\dfrac{-6}{17}=-0.352\\\\\theta=\cos^{-1}(\dfrac{-6}{17})=110.66^\circ$

Hence, the value of cos theta is -0.352.

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3 years ago

MAVERICK [17]

if you find a problem on answer respond me

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4 years ago

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