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Natali5045456 [20]

3 years ago

10

There was some gas in the tank. I added 13.3 gallons to it. After that, there was 21 gallons. How many gallons were in the tank

at the start?

1 answer:

s344n2d4d5 [400]3 years ago

8 0

Answer:
17.7
work:
-subtract to find the original number.
21 - 13.3
17.7
hope this helps! :D

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Find sin 0, where is the angle shown.<br> Give an exact value, not a decimal approximation.

Nata [24]

Answer:

$\displaystyle \sin\theta=\frac{12}{13}$

Step-by-step explanation:

Recall that in a right triangle, sine is the ratio of the opposite side to the hypotenuse:

$\displaystyle \sin\theta=\frac{\text{opposite}}{\text{hypotenuse}}$

We are actually not given the opposite side in this case. However, since we know the hypotenuse and the adjacent side, we can use the Pythagorean Theorem to find the opposite side. So:

$a^2+b^2=c^2$

Let <em>a</em> be the adjacent side and <em>b</em> be the opposite side. <em>c</em> will be the hypotenuse.

Substitute:

$(5)^2+b^2=(13)^2$

Solve for <em>b: </em>

<em /> $b=\sqrt{169-25}=\sqrt{144}=12$ <em />

So, the opposite side measures 12.

Then sine will be:

$\displaystyle \sin\theta=\frac{12}{13}$

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Shtirlitz [24]

Answer:

2x+12=22

Step-by-step explanation:

the side we don't know is x and there are 2 and there are 2 lengths the same in a rectangle. we know one of them and it is 6 so we do 6 x 2 which is 12.

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Doss [256]

Answer:

x = 10, AB = 57

Step-by-step explanation:

In a trapezoid, the length of the median is one-half the sum of the lengths of the bases. From this, we have:

$\frac{1}{2} (5x + 7 + 8x - 11) = 63$

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$13x = 130$

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$5(10) + 7 = 50 + 7 = 57$

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Answer:

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Step-by-step explanation:

17*9.26=157.42

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47,000 *157.42

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