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labwork [276]
3 years ago
5

[-10 +(-3)]-[6+(-9)] how do you solve this question

Mathematics
1 answer:
victus00 [196]3 years ago
5 0
You calculate
<span>[-10 +(-3)]-[6+(-9)]</span>
=[-10-3]-[6-9]
=-13-[-3]
=-13+3
= -10
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PLEASE HELP ME WITH THESE 2 QUESTIONS PLZ
antiseptic1488 [7]

Answers: a = \frac{3\pi}{2}, b = (0, -1), c = C, d = 0

<u>Explanation:</u>

a) Add 2π (\frac{4\pi}{2}) until you get a positive value.

-\frac{\pi}{2} + \frac{4\pi}{2} = \frac{3\pi}{2}, which is located on the y-axis at 270°

b) Look at the Unit Circle to find the coordinates of \frac{3\pi}{2} = (0, -1)

c) cot = \frac{adjacent}{opposite} = \frac{x}{y}

d) \frac{x}{y} = \frac{0}{-1} = 0

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Answer: 471.24

<u>Explanation:</u>

angular speed (w) = \frac{1(revolution)}{30(minutes)} *\frac{2\pi(radians)}{1(revolution)} *\frac{60(minutes)}{1(hour)}

                            = 4π radians/hour

linear speed (v) = r * w

                          = \frac{75(meters)}{2} * \frac{4\pi(radians)}{hour}

                           = 150π meters/hour

                           ≈ 471.24 meters/hour

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work is attached. :D


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