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ludmilkaskok [199]
3 years ago
12

I don’t know how to do this at all. I don’t need work just the answer

Mathematics
1 answer:
larisa86 [58]3 years ago
6 0

Answer:

8 cm

Step-by-step explanation:

C = 2(pi)r

2(pi)r = C

2(3.14)r = 50.24

r = 8

Answer: 8 cm

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Please help. Screenshot attachedn
NARA [144]

Answer:

x = -0.17   and    x = -5.83

Step-by-step explanation:

We are asked to solve the quadratic equation

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We use the quadratic formula using a = 1, b = 6 and c = 1

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Then, the solutions are given by;

x=\frac{-6+/-\sqrt{36-4\,(1)\,(1)} }{2} =\frac{-6+/-\sqrt{32} }{2}

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8 0
3 years ago
If a vertical line is dropped from the x-axis to the point (12, –9) in the diagram below, what is the value of sec?
dem82 [27]

Answer:

Value of \sec \theta = \frac{5}{4}

Step-by-step explanation:

Given: A vertical line is dropped from the x-axis to the point (12, -9) as shown in the diagram below;

To find the value of \sec \theta.

By definition of secants;

\sec \theta = \frac{1}{\cos \theta}

Now, first find the cosine of angle \theta

As the point (12 , -9) lies in the IV quadrant , where \cos \theta > 0

Consider a right angle triangle;

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Using Pythagoras theorem;

(Hypotenuse side)^2= (12)^2 + (-9)^2 = 144 + 81 = 225

or

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Cosine ratio is defined as in a right angle triangle, the ratio of adjacent side to hypotenuse side.

\cos \theta = \frac{Adjacent side}{Hypotenuse side}

then;

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and

\sec \theta = \frac{1}{\cos \theta}= \frac{1}{\frac{4}{5}} = \frac{5}{4}

therefore, the value of \sec \theta is, \frac{5}{4}

5 0
3 years ago
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Answer:

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3 0
2 years ago
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Answer:

Step-by-step explanation:

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2 years ago
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