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lesya [120]
3 years ago
7

5 questions and if you answer then you will get points, Brainliest answer, thanks, and 5-star rating thx

Mathematics
2 answers:
shusha [124]3 years ago
5 0
1. A
2. A
3. B
4. D
5. D
Nikitich [7]3 years ago
4 0
This is independent as he is picking up cards randomly.
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Write the following ratio in their simplest form (a)150minutes:1 1/2 hours (b) 150cm:1060mm ​
spayn [35]

Answer:

a) 5:3

b) 7.5:5.3

Step-by-step explanation:

150min : 90min (1 and a half hour)

10 : 6

5 : 3

150 × 10 mm : 1060 mm

1500 : 1060

750 : 530

7.5 : 5.3

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2 years ago
Evaluate 8+3e8+3e8, plus, 3, e when e=2e=2e, equals, 2.
Katen [24]

Answer:

yes that is right

Step-by-step explanation:

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3 years ago
Help me I need the steps
notka56 [123]

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45

Step-by-step explanation:

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What is the exact value of arccos(−2√2) ?
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Answer:

See explanation

Step-by-step explanation:

The range of the cosine function is -1\le \cos x\le 1

Therefore arc \cos (-2\sqrt{2}) is not defined.

Assuming your question is rather arc \cos (-\frac{\sqrt{2}}{2})

Then arc \cos (-\frac{\sqrt{2}}{2})=\pi-arc \cos (\frac{\sqrt{2}}{2})  in the second quadrant.

arc \cos (-\frac{\sqrt{2}}{2})=\pi-\frac{\pi}{4}

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

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