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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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The legs of an isosceles right triangle both measure 10 inches. Find the length of the hypotenuse.
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14.14

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3 years ago
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the -7 is found there twice, so it has a multiplicity of 2
the +7 is there thrice, so it has multiplicity of 3
7 0
2 years ago
Whats the total area of covered box with a length of 4ft a width oc 3ft and height of 6 ft
hodyreva [135]
The total area of a box is the sum of all the area of the faces it has. It is also called the surface area. The area of one face of a rectangular box is equal to the product of its length and width. So, the total area would be:

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SA = 2(4)(3) + 2(3)(6) + 2(4)(6)
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6 0
3 years ago
Read 2 more answers
So, I need some help with these scatter plot questions. (basically free points because these might be easy for you!) (20 points)
nlexa [21]

Hello,

I have a graphing calculator so this will be easy for me to answer and explain how to figure these out. Here we go!

1. Well on a Ti - 84 plus calculator it says graph then you put in thee equations for each and C and D are already incorrect cause they go straight up and B is incorrect because it is a straight line on the top going straight. In this case your looking for a line that goes through the dots. And the answer would be A) Y = 1/2x + 7.

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4. Category A had 36 groups in group 1. and Category B had 12 groups in group 1. Easy!

Please mark Brainliest!

Hope I Helped!

Have a fantastic Day!


3 0
2 years ago
The graph shows the value of a certain model of car compared with it's age. which statement is true?
s2008m [1.1K]

The only true statement is A:

"The data show a negative linear relationship."

<h3></h3><h3>Which statement is true?</h3>

On the graph, we can see how the car's vale decreases almost linearly with the age of the car.

Where the response variable would be the one on the y-axis, which is the car's value.

For that linear behavior, we know that there is a correlation coefficient different than zero. So options B, C, and D are false.

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If you want to learn more about data sets:

brainly.com/question/4219149

#SPJ1

6 0
1 year ago
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