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2 years ago

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Amy is planning the seating arrangement for her wedding reception. Each round table can sit 12 guests. The head table can sit th

e bride and groom with the 6 wedding attendants. If Amy expects 198 to 270 guests to attend her wedding, including the attendants, what is the range for the number of round tables she will need for her reception?
A. 22 to 28
B. 17 to 23
C. 19 to 23
D. 16 to 22

1 answer:

adelina 88 [10]2 years ago

6 0

Answer:

D

Step-by-step explanation:

16*12 is 192. Plus the 6 for the bride and groom, and you get a total of 198.

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Given:

$\sin x=-\dfrac{15}{17}$

x lies in the III quadrant.

To find:

The values of $\sin 2x, \cos 2x, \tan 2x$ .

Solution:

It is given that x lies in the III quadrant. It means only tan and cot are positive and others are negative.

We know that,

$\sin^2 x+\cos^2 x=1$

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$\cos x=\pm\sqrt{\dfrac{289-225}{289}}$

x lies in the III quadrant. So,

$\cos x=-\sqrt{\dfrac{64}{289}}$

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And,

$\cos 2x=1-2\sin^2x$

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You take the 12 to the other side making b subject of the formula (-b in this case)
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