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vodka [1.7K]
3 years ago
11

Use the area to find the radius. If you could include steps that’ll be very helpful :)

Mathematics
1 answer:
Marizza181 [45]3 years ago
5 0

Answer:

Radius = 13 m

Step-by-step explanation:

Formula for area of circle is given as:

A = \pi {r}^{2}  \\  \\  \therefore \: 169\pi \: = \pi {r}^{2}  \\  \\  \therefore \:  {r}^{2}  =  \frac{169\pi }{\pi}  \\  \\ \therefore \:  {r}^{2}  = 169 \\  \\ \therefore \:  {r} =  \pm \sqrt{169}  \\  \\\therefore \: r =  \pm \: 13 \: m \\ \\  \because \: radius \: of \: a \: circle \: can \: not \: be \: a \: negative \: \\quantity \\    \\  \huge \red{ \boxed{\therefore \: r =  13 \: m }}

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If I can walk 9673.6 meters in 5 hours. How far can I walk in 70 minutes. ( I need the work)
den301095 [7]

First, convert 5 hours into minutes:

5 hours 60 min

------------ * --------------- = 300 min

1 1 hr

Next, find the unit rate in m/min:

9673.6 m

--------------- = 32.24 m/min

300 min

Now find the distance you can walk in 70 minutes at this rate:

32.24 m

------------- * 70 min = 2247 meters (answer)

1 min

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6 0
4 years ago
Solve the following multi-step equation [write the numbers only] Will mark as brainliest if you answer this question
lapo4ka [179]

Answer:

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Step-by-step explanation:

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8 0
3 years ago
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Find the six trigonometric function values of the angle θ in standard position, if the terminal side of θ is defined by x + 2y =
Black_prince [1.1K]

Answer:

\sin \theta  = \frac{y}r} = \frac{-1}{\sqrt{5}} \cdot \frac{\sqrt{5}}{\sqrt{5}} = -\frac{\sqrt{5}}{5}\\\\\cos \theta  = \frac{x}{r} = \frac{2}{\sqrt{5}} \cdot \frac{\sqrt{5}}{\sqrt{5}} = -\frac{2\sqrt{5}}{5} \\\\\tan \theta  = \frac{y}{x} = \frac{-1}{2} = -\frac{1}{2} \\\\\cot \theta  = \frac{x}{y} = \frac{2}{-1} = -2\\\\\sec \theta = \frac{r}{x} = \frac{\sqrt{5}}{2} \\\\\csc \theta = \frac{r}{y} = \frac{\sqrt{5}}{-1} = -\sqrt{5}

Step-by-step explanation:

First, we need to draw the terminal position of the given angle. To do so, we need to find a point that lies on the straight line x + 2y= 0, x\geq 0

If we choose x = 2 (we can do so because of the condition x \geq 0, which means that any positive value is suitable for x), then we have

2 +2y = 0\implies 2 = -2y \implies y = -1

Therefore, the terminal side of the angle \theta  is passing through the origin and the point  (2,-1) and now we can draw it.

The angle  \theta  is presented below.

The distance of the point  (2,-1) from the origin equals

r = \sqrt{2^2 + (-1)^2} = \sqrt{5}

Now, we can determine the values of the six trigonometric function, by using their definitions.

\sin \theta  = \frac{y}r} = \frac{-1}{\sqrt{5}} \cdot \frac{\sqrt{5}}{\sqrt{5}} = -\frac{\sqrt{5}}{5}\\\\\cos \theta  = \frac{x}{r} = \frac{2}{\sqrt{5}} \cdot \frac{\sqrt{5}}{\sqrt{5}} = -\frac{2\sqrt{5}}{5} \\\\\tan \theta  = \frac{y}{x} = \frac{-1}{2} = -\frac{1}{2} \\\\\cot \theta  = \frac{x}{y} = \frac{2}{-1} = -2\\\\\sec \theta = \frac{r}{x} = \frac{\sqrt{5}}{2} \\\\\csc \theta = \frac{r}{y} = \frac{\sqrt{5}}{-1} = -\sqrt{5}

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3 years ago
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7 0
3 years ago
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madam [21]

Answer:

A. 2nd Ave

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Parallel means that they continue forever, go in the same direction , and never meet. 1st and 2nd Ave are parallel lines.

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