3 years ago

3m-2n+4p=15 m-n+p=3 m+4n-5p=0

Mathematics

1 answer:

Viefleur [7K]3 years ago

6 0

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What is 20% of 140 ??????????????

IRISSAK [1]

The answer is going to be 28. hope that helped

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3 years ago

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I’m just wanting to know because this is really bugging me and I am having a brain fart. But if you have 10 assignments left and

Butoxors [25]

You would need to complete 10/68 of an assignment per day if I'm reading you right to finish on time

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2 years ago

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Let: u, v, w \varepsilon R3<br><br> Prove: (u x v) * [(v x w) x (w x u)] = [u * (v x w)]2

sweet [91]

Recall that for 3 vectors $a,b,c$ , all in $\mathbb R^3$ , the vector triple product

$a\times(b\times c)=(a\cdot c)b-(a\cdot b)c$

$(v\times w)\times(w\times u)=((v\times w)\cdot u)w-((v\times w)\cdot w)u$

Also recall the scalar triple product,

$a\cdot(b\times c)$

which gives the signed volume of the parallelipiped generated by the three vectors $a,b,c$ . When either $a=b$ or $a=c$ , the parallelipepid is degenerate and has 0 volume, so

$(v\times w)\cdot w=0$

and the above reduces to

$(v\times w)\times(w\times u)=((v\times w)\cdot u)w$

so that

$(u\times v)\cdot[(v\times w)\times(w\times u)]=(u\times v)\cdot((v\times w)\cdot u)w$

The scalar triple product has the following property:

$a\cdot(b\times c)=b\cdot(c\times a)=c\cdot(a\times b)$

Since $(v\times w)\cdot u$ is a scalar, we can factor it out to get

$((v\times w)\cdot u)((u\times v)\cdot w)$

and by the property above we have

$(u\times v)\cdot w=u\cdot(v\times w)$

and so we end up with

$[u\cdot(v\times w)]^2$

as required.

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3 years ago

Use the distributed property to write an expression equivalent to 5x(3 4)

guajiro [1.7K]

Um idk lane and oops idk Avenue

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2 years ago

There are 10 history books in a bookcase. When

Salsk061 [2.6K]

Answer:

D) 140

Step-by-step explanation:

140% of 10 is 14 and 14 added to ten is 24

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2 years ago