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Nadya [2.5K]
3 years ago
9

Rick charges $50 plus $40 an hour to fix cars. Let x be the number of hours that he works and y be the overall cost that he char

ges. Write the equation
Mathematics
1 answer:
Serjik [45]3 years ago
5 0
Y= 40x+ 50 (i need 20 characters to post this so ignore)
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Which action by the body best releases heat and cools the body during and after exercising?
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Geometry<br> Solve for x. Round to the nearest tenth of a degree, if necessary.
zvonat [6]

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  13. x = 52.8°

  14. 663.65 ft

  15. 30.7 ft

Step-by-step explanation:

The mnemonic SOH CAH TOA is intended to remind you of the relations between sides of a right triangle and trig functions of the acute angles.

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<h3>13.</h3>

The sides adjacent and opposite the angle are marked. The relevant trig relation is ...

  Tan = Opposite/Adjacent

  tan(x°) = 2.5/1.9

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  x° = arctan(2.5/1.9) ≈ 52.8°

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<h3>14.</h3>

Again, the tangent relation comes into play. The given values are the side opposite and the angle, and we are asked for the side adjacent.

  Tan = Opposite/Adjacent

  tan(11°) = (129 ft)/(distance to shore)

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<h3>15.</h3>

In this scenario, the given angle is opposite the given side of the triangle. The measure of the hypotenuse is needed.

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  sin(71°) = (29 ft)/(ladder length) . . . . substitute given information

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2 years ago
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16x^4-81y^4  difference of perfect squares...

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3 years ago
I need help!!! and make sure its 100 percent right!! my graduation is at rate of not passing
geniusboy [140]

Answer:

I'm not 100% sure I'm right but I think x = -1

because it says "f(x)" and then it says"Find f(-1)" so that is why I think x = -1

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2 years ago
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