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muminat
3 years ago
10

Fiona races BMX around a circular dirt course. If the radius of the course is 70 meters, what is the total distance Fiona covers

in two laps of the race? about 30,772 meters about 15,386 meters about 879.2 meters about 439.6 meters about 219.8 meters
Mathematics
2 answers:
7nadin3 [17]3 years ago
8 0

Answer:

Its 879.2.

Step-by-step explanation:

nekit [7.7K]3 years ago
3 0
2 * (2*3.14*R) =
2 * (2*3.14*70) = 879,2
so the answer is about 879,2 meters
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Find exact values for sin θ and tan θ if cos θ = -4/9 and tan θ > 0.
julsineya [31]

Answer:

Part 1) sin(\theta)=-\frac{\sqrt{65}}{9}

Part 2) tan(\theta)=\frac{\sqrt{65}}{4}

Step-by-step explanation:

we have that

The cosine of angle theta is negative and the tangent of angle theta is positive

That means that the sine of angle theta is negative

step 1

Find sin(\theta)

we know that

sin^{2}(\theta) +cos^{2}(\theta)=1

we have

cos(\theta)=-\frac{4}{9}

substitute

sin^{2}(\theta) +(-\frac{4}{9})^{2}=1

sin^{2}(\theta) +\frac{16}{81}=1

sin^{2}(\theta)=1-\frac{16}{81}

sin^{2}(\theta)=\frac{65}{81}

square root both sides

sin(\theta)=\pm\frac{\sqrt{65}}{9}

Remember that

In this problem the sine of angle theta is negative

so

sin(\theta)=-\frac{\sqrt{65}}{9}

step 2

Find tan(\theta)

we know that

tan(\theta)=\frac{sin(\theta)}{cos(\theta)}

we have

sin(\theta)=-\frac{\sqrt{65}}{9}

cos(\theta)=-\frac{4}{9}

substitute the given values

tan(\theta)=-\frac{\sqrt{65}}{9}:-\frac{4}{9}=\frac{\sqrt{65}}{4}

3 0
3 years ago
Google has just purchased your website that reviews GPS systems. You made a profit of $65,000. You would like to invest the $65,
d1i1m1o1n [39]
Hi there
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6 0
3 years ago
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atroni [7]
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5 0
3 years ago
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Marizza181 [45]
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3 years ago
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mamaluj [8]

Answer:

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Step-by-step explanation:

The area of the triangular base A = bh/2 where b = base = 28 cm and h = height = 22.4 cm.

Now, the volume of the triangular prism, V = area of triangular base, A × height of prism, h'

V = Ah' where h = height of prism = 18.1 cm

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Substituting the values of the variables into the equation for V, we have

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So, the volume of the triangular prism is 5676.16 cm³

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3 years ago
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