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2 years ago

14

Two membership levels are offered at a local bookstore. how many books need to be purchased from each membership so that the 2 m

embership levels cost the same

1 answer:

Art [367]2 years ago

3 0

Answer:

.

Step-by-step explanation:

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Which expression gives the surface area of a sphere with radius r

ohaa [14]

Answer:

Simple, 4*pi*r^2

Step-by-step explanation:

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Which of the following are identities? Check all that apply

Natasha2012 [34]

Answer:

A, C

Step-by-step explanation:

Actually, those questions require us to develop those equations to derive into trigonometrical equations so that we can unveil them or not. Doing it only two alternatives, the other ones will not result in Trigonometrical Identities.

Examining

A) True

$\frac{1-tan^{2}x}{2tanx} =\frac{1}{tan2x} \\ \frac{1-tan^{2}x}{2tanx} =\frac{1}{\frac{2tanx}{1-tan^{2}x}}\\ tan2x=\frac{1-tan^{2}x}{2tanx}$

Double angle $tan2\alpha =\frac{1 -tan^{2}\alpha }{2tan\alpha}$

B) False,

No further development towards a Trig Identity

C) True

Double Angle Sine Formula $sin2\alpha =2sin\alpha *cos\alpha$

$sin(8x)=2sin(4x)cos(4x)\\2sin(4x)cos(4x)=2sin(4x)cos(4x)$

D) False No further development towards a Trig Identity

$[sin(x)-cos(x)]^{2} =1+sin(2x)\\ sin^{2} (x)-2sin(x)cos(x)+cos^{2}x=1+2sinxcosx\\ \\sin^{2} (x)+cos^{2}x=1+4sin(x)cos(x)$

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Find the equation of the line shown.

vfiekz [6]

Answer:

y=x+6

Step-by-step explanation:

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2 years ago

Xto the 2nd power - 49 = 0

AnnZ [28]

Answer:

7 to the second power... because 7 times is 49 and 49-49 is 0... so 7 to the second power

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2 years ago

Hey guys I need help with this right quick...got some time to help????

Zepler [3.9K]

Answer=18
3x4=12
12x6=72
72x1/4=18

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2 years ago