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Semmy [17]
4 years ago
8

I WILL GIVE YOU 30 POINTS IF YOU ANSWER THIS QUICK!!!!!!!!

Mathematics
1 answer:
asambeis [7]4 years ago
6 0
<span>x-y * x+y = x^2 -y^2
now how about x^4+64 = x^2 -4x+8 * x^2 +4x+8</span>
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543,000,000,000,000 in Scientific notation
Zielflug [23.3K]

Answer:

5.43×10^14 or

5 .43 \times 10^{14}

Step-by-step explanation:

Scientific notation, the number must always be less than 10, in this case 5.43. The exponent represents how much times I moved the decimal point to the left.

8 0
3 years ago
Miguel spent 1/8 of his savings on a new video game system. Mila spent 12% of her savings on a DVD, and Manny spent 0.1 of his s
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4 0
3 years ago
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Can I have halp with all and an explanation because I am terrible at properties.
Salsk061 [2.6K]
1.   4 • (–3) • 5
   so 4 x (-3) = -12  and then -12 x 5 = -60
2.   (2.25 x 23) x 4
so (2.25 x 23) 51.75  and then 51.75 x4 = 207
4.  5 x 12 x (-2)
 so 5 x 12 = 60  and then 60 x (-2) = -120
5.   35(26)(0) =
  so 35 x 26 = 910  and then  910 x 0 = 0

4 0
4 years ago
Choose the correct simplification of the expression (−21r9s3t36)0
morpeh [17]
Pretty sure when you multiply something by 0 it is 0 <span />
5 0
3 years ago
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Answer the question in the picture
nekit [7.7K]

Recall the angle sum identities:

\sin(x+y)=\sin x\cos y+\cos x\sin y

\cos(x+y)=\cos x\cos y-\sin x\sin y

Now,

\tan(x+y)=\dfrac{\sin(x+y)}{\cos(x+y)}=\dfrac{\sin x\cos y+\cos x\sin y}{\cos x\cos y-\sin x\sin y}

Divide through numerator and denominator by \cos x\cos y to get

\tan(x+y)=\dfrac{\tan x+\tan y}{1-\tan x\tan y}

Next, we use the fact that x,y lie in the first quadrant to determine that

\sin x=\dfrac12\implies\cos x=\sqrt{1-\sin^2x}=\dfrac{\sqrt3}2

\cos y=\dfrac{\sqrt2}2\implies\sin x=\sqrt{1-\cos^2x}=\dfrac1{\sqrt2}

So we then have

\tan x=\dfrac{\sin x}{\cos x}=\dfrac{\frac12}{\frac{\sqrt3}2}=\dfrac1{\sqrt3}

\tan y=\dfrac{\sin y}{\cos y}=\dfrac{\frac1{\sqrt2}}{\frac{\sqrt2}2}=1

Finally,

\tan(x+y)=\dfrac{\frac1{\sqrt3}+1}{1-\frac1{\sqrt3}}=\dfrac{1+\sqrt3}{\sqrt3-1}=2+\sqrt3\approx3.73

4 0
3 years ago
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