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3 years ago

The music festival took 77 days to plan.

2 answers:

8 0

77 days turned into weeks means that you have to divide by seven.
77/7 = 11.
It took eleven weeks to plan (Answer choice D)

ivann1987 [24]3 years ago

7 0

Answer:

(D) is the answer

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Please help #9 Thanks if help!

Oksanka [162]

Your answer is correct actually

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4 years ago

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If sin(x) = 5/13, and x is in quadrant 1, then tan(x/2) equals what?

Rufina [12.5K]

$x$ is in quadrant I, so $0$ , which means $0$ , so $\dfrac x2$ belongs to the same quadrant.

Now,

$\tan^2\dfrac x2=\dfrac{\sin^2\frac x2}{\cos^2\frac x2}=\dfrac{\frac{1-\cos x}2}{\frac{1+\cos x}2}=\dfrac{1-\cos x}{1+\cos x}$

Since $\sin x=\dfrac5{13}$ , it follows that

$\cos^2x=1-\sin^2x\implies \cos x=\pm\sqrt{1-\left(\dfrac5{13}\right)^2}=\pm\dfrac{12}{13}$

Since $x$ belongs to the first quadrant, you take the positive root ( $\cos x>0$ for $x$ in quadrant I). Then

$\tan\dfrac x2=\pm\sqrt{\dfrac{1-\frac{12}{13}}{1+\frac{12}{13}}}$

$\tan x$ is also positive for $x$ in quadrant I, so you take the positive root again. You're left with

$\tan\dfrac x2=\dfrac15$

4 0

3 years ago

I need help on this question please I know so much help in one hour ( don't mind hand writing I'm rushing )

-Dominant- [34]

18 because they need to be identical and you only have 18 chocolate bars

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3 years ago

Please help and show work

Eva8 [605]

Answer:

1) x(x+7)

3) (x+5)*(x+4)

4) (x-6)*(x-8)

5) x(2x+21)+11

6) 5(a-5)*(a+5)

7) (4x+3)*(2x-3)

8) 4( x²-6xy+8)

Step-by-step explanation:

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3 years ago

Fill in the number that makes this sentence true 6x9=(6x5)+(6x)

antiseptic1488 [7]

Fill in the number that makes this sentence true 6x9=(6x5)+(6x) (6x5)

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3 years ago