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Colt1911 [192]
3 years ago
6

It takes 60 minutes for 7 people to paint 5 walls.

Mathematics
1 answer:
ziro4ka [17]3 years ago
3 0
0.7/1 of a wall per person
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2sin^2 2x=2<br><br> In the domain [0, 2pi)
djverab [1.8K]
Please type this as 2(sin 2x)^2=2      <span>2sin^2 2x=2 is confusing.

Reducing this expression:  (sin 2x)^2 = 1

Taking the sqrt of both sides, sin 2x = plus or minus 1

If sin 2x = 1, then 2x must be pi/2 or 3pi/2, and so x must be pi/4 or 3pi/4.

Now you do this for sin 2x = -1.</span>
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3 years ago
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Answer:

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The answer to this rests on knowing that there are four properties of multiplication (which your teacher will likely expect you to know...):

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I won't define each of these -- they should be in your notes or textbook. Look them up.

In this case, we are multiplying three terms together -- on the left hand side the parentheses mean to multiply a and b first, then multiply that by 3. On the right hand side, we multiply b times 3 first, and then multiply the product by a.

This would be an example of the associative property of multiplication: when three or more factors are multiplied together, the product is the same regardless of how the factors are grouped.

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3 0
3 years ago
What is the volume of the prism?
GREYUIT [131]

let's firstly conver the mixed fractions to improper fractions and then get their product.

\stackrel{mixed}{4\frac{1}{2}}\implies \cfrac{4\cdot 2+1}{2}\implies \stackrel{improper}{\cfrac{9}{2}} ~\hfill \stackrel{mixed}{2\frac{1}{2}}\implies \cfrac{2\cdot 2+1}{2}\implies \stackrel{improper}{\cfrac{5}{2}} \\\\[-0.35em] ~\dotfill\\\\ \cfrac{9}{2}\cdot \cfrac{5}{2}\cdot 6\implies \cfrac{270}{2}\implies 135

hmmm I take it that one can write that mixed as 135\frac{0}{2}.

is valid, not that it makes any sense.

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2 years ago
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kompoz [17]
So, I think that your answer will be D because it has to end at a degree of 180
7 0
3 years ago
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