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jenyasd209 [6]
3 years ago
14

D = 13 in. Radius =

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

Answer:

6.5 in

Step-by-step explanation:

D = 2r

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In a random sample of 5 residents of the state of Texas, the mean waste recycled per person per day was 1.9 pounds with a standa
sammy [17]
<h2>Answer with explanation:</h2><h2 />

The confidence interval for population mean is given by :-

\overline{x} \pm\ t_{\alpha/2}\dfrac{\sigma}{\sqrt{n}}

Given : Sample size : n= 5, since n<30 , so the test we use here is t-test.

Sample mean : \overline{x}=1.9\text{ pounds}

Standard deviation: \sigma=0.89\text{ pounds}

Significance level : 1-\alpha:1-0.99=0.01

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t_{n-1,\alpha/2}=t_{5-1,0.01/2}=t_{4,0.005}=4.604

Now, the 99% confidence interval for the mean waste recycled per person per day for the population of Texas will be :-

1.9\pm\ (4.604)\dfrac{0.89}{\sqrt{5}}\\\\\approx1.9\pm1.832\\\\=(1.9-1.832,1.9+1.832)=(0.068,\ 3.732)

Hence, the 99% confidence interval for the mean waste recycled per person per day for the population of Texas  = (0.068, 3.732)

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4 years ago
In a 30-60-90 triangle, how many sides do you need to know in order to determine the remaining sides
Sergeeva-Olga [200]
You only need to know one side, you can use , tan, sin, or cos of the angles to find the other 2 sides.
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3 years ago
Solve for the indicated variable.
Hunter-Best [27]

Answer:

<h3><u>1.</u>)</h3>

3n + 1 = 7n - 5

1 + 5 = 7n - 3n

6 = 4n

3/2 = n

<h3><u>2</u><u>.</u>)</h3>

2[x + 3(x - 1)] = 18

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2(4x - 3) = 18

8x - 6 = 18

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x = 12/8

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6(y + 2) - 4 = -10

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6y = -10 - 8

6y = -18

y = -3

<h3><u>4</u><u>.</u>)</h3>

2x² = 50

x² = 50/2

x = √25

x = 5

<h3><u>5</u><u>.</u>)</h3>

5 + 2(k + 4) = 5(k - 3) + 10

5 + 2k + 8 = 5k - 15 + 10

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<h3><u>6</u><u>.</u>)</h3>

6 + 2x(x - 3) = 2x²

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2/3x - 18 = x/6

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12(x - 2/3 = 2x + 1/4)

4x - 8 = 6x + 3

4x - 6x = 8 + 3

2x = 11

x = 11/2

<u>-TheUnknownScientist</u><u> 72</u>

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3 years ago
The solution set for 6a2 − a − 5 = 0 is?
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(a2 + 5) • (a2 + 1) is your answer to this question.
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