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wel
2 years ago
5

.)A bag has 7 red marbles, 8 blue marbles and 3 black marbles. What is the probability of picking a blue marble, replacing it, a

nd then picking a red marble? Answer a. 14/81 b. 7/108 c. 2/27 d. 1/9 2.)A bag has 7 red marbles, 8 blue marbles and 3 black marbles. What is the probability of picking a black marble, replacing it, and then picking a red marble? Answer a. 2/27 b. 7/108 c. 14/81 d. 1/9
Mathematics
1 answer:
topjm [15]2 years ago
3 0
Choice A. <span>14/81 
</span>Possible outcomes = total number of marbles = 18 
P (1st blue) = 8/18 = 4/9 
P (2nd red with replacement of blue) = 7/18 
P (both) = (4/9) * (7/18) = 28/162 = 14/81 

Choice B. 7/18
Possible outcomes = total number of marbles = 18 
<span>P (1st black) = 3/18 = 1/6 </span>
<span>P (2nd red with replacement of black) = 7/18 </span>
<span>P (both) = (1/6) * (7/18) = 7/108</span>
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A club raises $3,207 to buy stuffed animals for a local children's hospital. Each stuffed animal costs $17. What is the maximum
Ksju [112]

Answering:

188

Explaining:

To solve this problem, we must divide the total amount of money raised by the cost of the stuffed animals. Each stuffed animal costs $17. The club raised $3,207 to buy said stuffed animals. By dividing the money earned, which is also the money the club is able to spend, by the cost of a single/one stuffed animal, we will get how many stuffed animals the club can purchase with the money they currently possess. Our equation will look like this: 3,207 ÷ 17.

After dividing 3,207 by 17, we have the number 188.64705882. This can be rounded to the nearest tenth to create the simpler yet still accurate number 188.6.

Our final step is to round 188.6 down to the whole number it already has. (That is to say, simply cut off the fraction and remove it to get our answer.) This step must be done because we are buying stuffed animals in a real-world situation. The club would not be able to purchase part of a stuffed animal for a fraction of the cost, and the cost of the stuffed animals in the problem is a fixed value. This means that the fraction is irrelevant since we cannot purchase anything with it, effectively making it totally irrelevant to the answer. After removing the fraction from 188.6, we are left with 188.

Therefore, the maximum number of stuffed animals the club can buy is <em>188 stuffed animals</em>.

4 0
2 years ago
The college is selling tickets to the basketball ball game for $59.30 each.So far they have made $213,480 in ticket sales . How
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3 years ago
Type the correct answer in each box.<br><br> The value of x is °, and the value of y is <br> °.
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Answer:

<h2>x = 60°, y = 50°</h2>

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<em>(look at the picture)</em>

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z = 70°

x + 50 + 70 = 180

x + 120 = 180         <em>subtract 120 from both sides</em>

x = 60°

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3 years ago
What is 3/18 simplified
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