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scoray [572]
3 years ago
3

The random numbers below represent 10 trials of a simulation. 2632, 1365, 9367, 2056, 0026, 6564, 1434, 8045, 4781, 8681 The num

bers 0–7 represent students who watched television last night, and the numbers 8 and 9 represent students who did not. Based on the simulated data, what is the probability that exactly 2 out of a group of 4 randomly selected seventh-graders watched television last night? A. 5 10 B. 4 10 C. 9 10 D. 1 10
Mathematics
1 answer:
astra-53 [7]3 years ago
6 0

Answer:

  D.  1/10

Step-by-step explanation:

The trial results (# who watched TV) are ...

  4 4 3 4 4 4 4 3 3 2

Of the 10 trials, only 1 resulted in 2 in the group of 4 watching TV.

Your probability is 1/10.

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25’5” equal how many inches
Arte-miy333 [17]

Answer: 300 inches

Step-by-step explanation:

7 0
3 years ago
One_half of the sum of x and 8 minus the product of 2 and c
elena-14-01-66 [18.8K]

X+8

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4 0
4 years ago
Please help me out :)
arlik [135]

Answer:

\frac{\sqrt{17} }{7}

Step-by-step explanation:

Using the Pythagorean identity

sin²x + cos²x = 1, then

sinx = \sqrt{1-cos^2x}

Note that (\frac{4\sqrt{2} }{7})² = \frac{32}{49}

sinΘ = \sqrt{1-(32/49)}

        = \sqrt{\frac{17}{49} } = \frac{\sqrt{17} }{7}

5 0
3 years ago
Given AB=10cm, CD=11cm, and AD=39cm, find the length of BC
liraira [26]

<u>Answer:</u>

BC = 18 cm

<u>Step-by-step explanation:</u>

As we can see from the diagram:

AB + BC + CD = AD

⇒ 10 cm + BC + 11 cm = 39 cm

⇒ BC + 21 cm = 39 cm

⇒ BC = 39 cm - 21 cm

⇒ BC = 18 cm

7 0
2 years ago
Please I really need help! Can you answer A and B and I will mark you as brainliest!
Georgia [21]

a) The average arithmetic mean is calculated by adding all of the values and then dividing the sum by the total number of values.

\frac{198+199(3)+200(2)+201(5)+202(2)}{13} =200.3

Which is 200.3.

b) Assume that the new average mean is 201, then

201 = \frac{198 + 199(3) + 200(2) + 201(5) + 202(2)+x}{14}

Solve for x.

2814= 2604x

Divide by 2604 to solve for x.

\frac{2814}{1604} = x = 1.75

So the height of the new player is 175 cm.

3 0
4 years ago
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