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postnew [5]
3 years ago
10

I need help with this one too

Mathematics
1 answer:
erastova [34]3 years ago
5 0
Number 7 is C.

Number 8 is a.
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A bag contains 42 red marbles, 6 white marbles, and 8 gray marbles. You randomly pick out a marble, record its color, and put it
Elanso [62]
For any single draw,

\mathbb P(\text{white})=\dfrac6{42+6+8}=\dfrac6{56}
\mathbb P(\text{gray})=\dfrac8{42+6+8}=\dfrac8{56}

Drawing a white marble or a gray marble are disjoint events; only one of them can happen. So

\mathbb P(\text{white or gray})=\mathbb P(\text{white})+\mathbb P(\text{gray})-\underbrace{\mathbb P(\text{white and gray})}_0
\mathbb P(\text{white or gray})=\dfrac6{56}+\dfrac8{56}=\dfrac{14}{56}

Out of 224 draws, you should expect \dfrac{14}{56}\times224=56 of the marbles to be either white or gray.
6 0
3 years ago
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NemiM [27]

Answer:

Step-by-step explanation:

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8 0
2 years ago
Is a rectangle a plane shape​
Triss [41]

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A plane shape with four straight sides and four right angles for corners is called a rectangle.

Step-by-step explanation:

3 0
3 years ago
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madreJ [45]
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Pls help !!<br><br> Solve and CHECK.<br><br> 1 / 4 ( p - 7) = 1/6 ( p - 3)
victus00 [196]

Answer:

the answer would be p= 15

Step-by-step explanation:

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