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kiruha [24]
4 years ago
12

Solve for x rounded to the nearest tenth. X 18 cos 70 =x/18

Mathematics
2 answers:
love history [14]4 years ago
5 0

Answer:

6.2 =x

Step-by-step explanation:

cos 70 =x/18

Multiply each side by 18

18cos 70 =x/18 *18

18cos 70 =x

6.15636258 = x

To the nearest tenth

6.2 =x

-BARSIC- [3]4 years ago
3 0

Answer:

x = 1260

Step-by-step explanation:

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Answer:

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Step-by-step explanation:

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9/20 to 5/9

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9/20 of the conkers collected are from Hannah

5/9 is larger than 9/20

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8 0
2 years ago
Rewrite <br><img src="https://tex.z-dn.net/?f=%20%7Bcos%7D%5E%7B4%7D%20x" id="TexFormula1" title=" {cos}^{4} x" alt=" {cos}^{4}
erastovalidia [21]

All you need is the double angle identity:

\cos^2x=\dfrac{1+\cos2x}2

So we have

\cos^4x=(\cos^2x)^2=\left(\dfrac{1+\cos2x}2\right)^2=\dfrac{1+2\cos2x+\cos^22x}4

Apply the identity again to the squared term:

\cos^4x=\dfrac{1+2\cos2x+\frac{1+\cos4x}2}4=\dfrac{3+4\cos2x+\cos4x}8

6 0
3 years ago
Central High wants to estimate the number of seniors who plan to go to a 4-year college. Answer the following.
Elodia [21]

Answer:

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Step-by-step explanation:

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600x .65=390

4 0
3 years ago
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Which ratio is NOT equivalent to the other choices?
Virty [35]

Answer:

It's not possible to answer the question with the information provided, you will need to post the ratios in the problem.

Step-by-step explanation:

3 0
3 years ago
The sum of two numbers is 840. one of the numbers is 357. what is the other number?​
nlexa [21]

Answer:

483

Step-by-step explanation:

840 minus 357 is 483

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