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Mathematics

2 answers:

Mumz [18]2 years ago

8 0

The answer is D 2x-5 (Factor out from the expression and then Reduce the numbers with the greatest common factor) brainlest pls?

grandymaker [24]2 years ago

4 0

The answer should be 2x-5

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What is the volume of the square in units cubed

Lerok [7]

Answer:

Answer is given below with explanations. 

Step-by-step explanation:

$volume \: of \: sphere = \frac{4}{3} \pi \: {r}^{3} \\ here \: r = \frac{1}{2} \\ volume \: of \: sphere \\ = \frac{4}{3} \times \frac{22}{7} \times \frac{1}{2} \times \frac{1}{2} \times \frac{1}{2} \\ = 0.523$

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4 0

3 years ago

Find the exact values of cos 3 pi/4 radians sin 3 pi/4 radians.

Liula [17]

If you consult the unit circle, you will see that:

$cos(\frac{3\pi}{4}) = -\frac{\sqrt{2}}{2}\\\\sin(\frac{3\pi}{4}) = \frac{\sqrt{2}}{2}$

3pi/4 in degrees is 3pi/4 * 180/pi = 3/4 * 180 = 135 degrees. And please refer to the attachment to how you can obtain the values above.

Now, lets multiply it together.

$-\frac{\sqrt{2}}{2} \cdot \frac{\sqrt{2}}{2} =\\\\-\frac{2}{4} =\\\\ \boxed{\bf{-\frac{1}{2}}}$

So, cos(3pi/4)sin(3pi/4) = -1/2