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3 years ago

What is the largestanima in theWorld

Mathematics

2 answers:

bogdanovich [222]3 years ago

8 0

Answer:

Blue whale

Step-by-step explanation:

sweet [91]3 years ago

6 0

Answer:

The largest animal in the world is the blue whale.

Step-by-step explanation:

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Factor 32x2+48x+18 in order to get about 69 pints if you get it correct (ASAP)

Genrish500 [490]

The answer is at bottom

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3 years ago

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A recent survey found that 79% of Americans use the internet. if a city has a population of 76,000 how many people in that city

Nuetrik [128]

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PROVE THAT:<br><br>cos 20° - sin 20° = \sqrt{2}sin25°<br><br>

Lemur [1.5K]

Answer:

See below.

Step-by-step explanation:

$\cos(20)-\sin(20)=\sqrt{2}\sin(25)$

First, use the co-function identity:

$\sin(90-x)=\cos(x)$

We can turn the second term into cosine:

$\sin(20)=\sin(90-70)=\cos(70)$

Substitute:

$\cos(20)-\cos(70)=\sqrt{2}\sin(25)$

Now, use the sum to product formulas. We will use the following:

$\cos(x)-\cos(y)=-2\sin(\frac{x+y}{2})\sin(\frac{x-y}{2})$

Substitute:

$\cos(20)-\cos(70)=-2\sin(\frac{20+70}{2})\sin(\frac{20-70}{2})\\\cos(20)-\cos(70) =-2\sin(45)\sin(-25)\\\cos(20)-\cos(70)=-2(\frac{\sqrt{2}}{2})\sin(-25)\\ \cos(20)-\cos(70)=-\sqrt{2}\sin(-25)$

Use the even-odd identity:

$\sin(-x)=-\sin(x)$

Therefore:

$\cos(20)-\cos(70)=-\sqrt{2}\sin(-25)\\\cos(20)-\cos(70)=-\sqrt{2}\cdot-\sin(25)\\\cos(20)-\cos(70)=\sqrt{2}\sin(25)$

Replace the second term with the original term:

$\cos(20)-\sin(20)=\sqrt{2}\sin(25)$

Proof complete.

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4 years ago

What is the apparent solution to the system of equations? y=−x+2y=4x+7

Ghella [55]

Oh what u will do is add 2y+4x+7

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Subtract 37/55-32/55

lana66690 [7]

The answer would be 5/55 because if you subtract 32 from 37 you would end up with 5 and because the denominator was the same you keep the denominator the same.

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4 years ago

What is the largestanima in theWorld​

What is the largestanima in theWorld