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3 years ago

9

0.3m = $4.41 what does m equals?

1 answer:

Sauron [17]3 years ago

3 0

0.3m=$4.41
just divide $4.41/0.3= m
m=14.7

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If 4sintheta = -3, solve for theta given 0°>_theta>_360°

Soloha48 [4]

Answer:

311.41 degrees

Step-by-step explanation:

If 4 sin Ф = -3 and Ф is between 0 and 360 degrees, then we conclude that Ф must be either in Quadrant III or Quadrant IV (because the sine is negative).

Let's assume we're in Quadrant IV. Then sin Ф = opp / hyp = -3/4; that is, the opp side is negative and has length 3, and the hypo is positive 4.

According to the Pythagorean Theorem, (-3)^2 + x^2 = 4^2, or,

x^2 = 16 - 9 = 7.

Then x is either √7 or -√7.

To find the angle Ф, use the inverse sine function:

Ф = arcsin (-3/4). Using a calculator we get the angle -40.59 degrees, which corresponds to (360 degrees - 40.59 degrees), or 311.41 degrees. We can check this by finding the sine of 311.41 degrees; the result is -0.75, which matches "If 4sintheta = -3."

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3 years ago

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What is the amplitude, period, and phase shift of f(x) = -4 sin(2x + π) - 5?

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Answer:

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Step-by-step explanation:

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Step-by-step explanation:

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