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Dvinal [7]
2 years ago
7

Image below, wont let me copy

Mathematics
1 answer:
loris [4]2 years ago
3 0

Answer:

A (equals -320.0064 just like in the question)

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1 3/17 + 1 3/17 + 9/17<br><img src="https://tex.z-dn.net/?f=1%20%20%5Cfrac%7B3%7D%7B17%7D%20%20%2B%201%5Cfrac%7B3%7D%7B17%7D%20%
Arturiano [62]
1\frac{3}{17}+1\frac{3}{17}+\frac{9}{17}=\frac{20}{17}+\frac{20}{17}+\frac{9}{17}=\frac{49}{17}=2\frac{15}{17}\approx2.88235.
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3 years ago
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How do you solve that (2cosx+1)(2cosx-1)(2cos2x-1)=2cos4x+1<br>Please help it's urgent!
suter [353]

On the left side, we can collapse some terms:

(2\cos x+1)(2\cos x-1)=4\cos^2x-1

Recall the double angle identity for cosine:

\cos^2x=\dfrac{1+\cos2x}2

So we have

4\cos^2x-1=\dfrac{4(1+\cos2x)}2-1=2\cos2x+1

With the same reasoning, we can collapse that side further:

(2\cos2x+1)(2\cos2x-1)=4\cos^22x-1=\dfrac{4(1+\cos4x)}2-1=2\cos4x+1

3 0
3 years ago
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The silver bar is 15cm long. The bar is melted and the silver is then made into a cuboid. The base of the cuboid is 10cm by 10 c
marishachu [46]
The question is impossible to answer since. Since you can't answer that without knowing the volume of the bar to start with. The only given is the length, there should be other dimensions like the width and area of the cross-section, for instance. 
Volume = Width x Depth x Height in all cases, so when you know the volume. But to solve for the height of the cuboid, the equation is V/100 (because the base of the cuboid is 100 cm^2)
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3 years ago
What equivalent expression is equal to this<br><br><br>(2^-4*2^-3)^5
Katen [24]

(2^{-4} \cdot z^{-3})^5=2^{-4 \cdot 5} \cdot z^{-3 \cdot 5}=2^{-20} \cdot z^{-15}

⇒ \frac{1}{2^{20} \cdot z^{15}}


8 0
3 years ago
Who ever gets it I will give Brainly and 20 points
Marina CMI [18]

Answer:

15%

Step-by-step explanation:

You add up all the frequencies and divide by 9 (the amount 6 was rolled).

It adds up to 60. Divide 9 by 60 and you have 15%.

3 0
2 years ago
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