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3 years ago

I’ll mark you the brainiest answer ASAP! Which option is equal to the given expression?

Mathematics

2 answers:

neonofarm [45]3 years ago

5 0

Answer:

Step-by-step explanation:

$\left( \dfrac{9}{8}\right)^4= \\\\\\\dfrac{9^4}{8^4}$

Therefore, the correct answer is choice C. Hope this helps!

Paul [167]3 years ago

4 0

Answer:

c is correct

Step-by-step explanation:

(9/8)^4

9^4/8^4

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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

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

7 0

3 years ago

Read 2 more answers

Write the equation of a line that is perpendicular to the given line and that passes through the given point.

poizon [28]

Answer: y=-3x+29

Step-by-step explanation:

First put in y-intercept form to find the slope

$4x-12y=2\\-12y=-4x+2\\y=\frac{1}{3} x-\frac{1}{6}$

Slope of the 1st equation is 1/3- the slope of the line perpendicular is the opposite reciprocal, so in the case it is -3

Use the point and the new slope to write the new equation in point slope format

$y-y_{1} =m(x-x_{1} )\\y-(-1)=-3(x-10)\\y+1=-3x+30\\y=-3x+29$

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3 years ago

Joshua has $24.He used 5/8of his money.How much money did he spend

zhenek [66]

So 5/8 of $24
5/8 * 24
15

Joshua spent $15.

Hope this helps :)

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3 years ago

Which Equation represents the line passing through points a and C on the graph below

zimovet [89]

Answer:

D!!

Step-by-step explanation:

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3 years ago

Please help with this question!!!!!

Finger [1]

72 in2 because you add the area of everything

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2 years ago