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Ymorist [56]
3 years ago
8

Complex numbers [ = square root symbol -[-64 How would I find this?

Mathematics
1 answer:
cestrela7 [59]3 years ago
8 0

-\sqrt{-64}=-\sqrt{8^2\cdot (-1)}-8\sqrt{-1}=-8i

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The answer is b) {y|y≤5}
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Solve the equation 3sin2 theta = sin e, for values of e between Oº and 360°
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Step-by-step explanation:

3 sin²θ = sin θ

3 sin²θ − sin θ = 0

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sin θ = 0 or sin θ = ⅓

If sin θ = 0, θ = 0°, 180°, 360°.

If sin θ = ⅓, θ = 19.5°, 160.5°.

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PilotLPTM [1.2K]

Answer:

Step-by-step explanation:

Let M = total amount of money earned

M = 12x+8y

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190<12x+8y

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190<12x+8(20), which simplifies to 190<12x+160.

Isolate x to find the amount of hours that Trevor needs to tutor.

190-160<12x

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30/12<x

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Trevor must tutor for more than 2.5 hours to make more than $190.

4 0
3 years ago
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sineoko [7]

Answer:

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If you do 81 divided by 4

I think Im not sure

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