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3 years ago

6

Solve.......

5 (2) x^{2} - 6" align="absmiddle" class="latex-formula">

1 answer:

dsp733 years ago

4 0

10x^2-6 hope this helps

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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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2 years ago

A bag contains red and blue marbles, such that the probability of drawing a blue marble is

ivanzaharov [21]

Answer:

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Step-by-step explanation:

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2 years ago

Read 2 more answers

3. 1 3/8 × 1 1/2=<br>4. 4 1/2× 2 3/8=<br>5. 1 1/8 × 3 1/2=

kipiarov [429]

Answer:

2 1/16, 10 11/16, 3 15/16

Step-by-step explanation:

3. 1 3/8 times 1 1/2= 2 1/16

4. 4 1/2 times 2 3/8= 10 11/16

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2 years ago

Use synthetic division to solve(X^3+1) divide by. X-1

frozen [14]

The answer is =x^2 +x +1 +2/x-1

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3 years ago

Points A and B have opposite x-coordinates but the same y-coordinates.

n200080 [17]

Answer:

c

Step-by-step explanation:

start before a and count until you get to B

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2 years ago