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3 years ago

5

Change the following percentage to fraction

"TexFormula1" title="116 \ \frac{2}{3} \%" alt="116 \ \frac{2}{3} \%" align="absmiddle" class="latex-formula">

1 answer:

marta [7]3 years ago

3 0

I think the answer is 350/3

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Let r3 have the euclidean inner product. let u = (-1, 1, 1) and v = (-7, 6, 15). if ||ku + v||= 7, what is k? give the exact ans

amm1812

Ma $k\mathbf u+\mathbf v=k(-1,1,1)+(-7,6,15)=(-k-7,k+6,k+15)$

Recall that for a vector $\mathbf x\in\mathbb R^n$ , we have $\|\mathbf x\|=\sqrt{\mathbf x\cdot\mathbf x}$ . So we have

$\|k\mathbf u+\mathbf v\|=\sqrt{(k\mathbf u+\mathbf v)(k\mathbf u+\mathbf v)}=7$
$\implies k^2\mathbf u\cdot\mathbf u+2k\mathbf u\cdot\mathbf v+\mathbf v\cdot\mathbf v=49$
$\implies3k^2+56k+261=0$
$\implies k=-9,-\dfrac{29}3$

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3 years ago

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natima [27]

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3 years ago

Convert 4875m to metres

Digiron [165]

4875m is miles so 7845552 meters

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3 years ago

Consider the diagram.

LenaWriter [7]

Answer:

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Pls help. I’ve done a lot of googling and calculating but every answer I put is wrong

Anuta_ua [19.1K]

Answer:

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Step-by-step explanation:

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