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4vir4ik [10]
3 years ago
6

which is a pair of dependent events? spinning a spinner one time and then spinning it a second time flipping a quarter and then

flipping a nickel removing a marble from a bag, not putting it back, and then removing a second marble rolling a number cube and then choosing one letter from the alphabet
Mathematics
2 answers:
Sphinxa [80]3 years ago
7 0
<h2><u>Answer and explanation:</u></h2>

Two events are said to be dependent on each other, if the outcome of the first thing affects the outcome of the second thing in such a way that the probability changes.

Here, the right answer will be = removing a marble from a bag, not putting it back, and then removing a second marble.

Explanation:

Lets suppose there were 10 marbles in the bag at the first place. Now, you removed one marble and did not put it back. So, remaining marbles will be 9. Now, if again you choose a marble, you have 9 marbles to choose from. We can see that probability changes with the event that occurred at first place.

So, this is the right answer.

Rest options are simultaneous one. They are not dependent in any way.

pishuonlain [190]3 years ago
5 0
Removing a marble and not putting it back. Doing so changes the probability and throws the whole thing off. Flipping a coin, be it a quarter or nickel, will always be 50/50. But the marbles depend on whether you put them back in the bag or not.
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In Jamie's class, 1/5 of the students are boys. What percent of the students in Jamie’s class are boys?
Cloud [144]

Answer:

The percentage of boys students in Jamie's class is 20 %

Step-by-step explanation:

Given as :

The total number of boys in the Jamie's class = \frac{1}{5} of the total student

Let the total number of student's in the class = x

So, The number of boys =  \frac{1}{5} × x

I.e The number of boys =  \dfrac{x}{5}

So , in percentage the number of boys students in class = \dfrac{\textrm Total number of boy student}{\textrm Total number of students} × 100

OR, % boys students = \dfrac{\dfrac{x}{5}}{x} × 100

or, % boys students = \frac{100}{5}

∴ % boys students = 20

Hence The percentage of boys students in Jamie's class is 20 %  . Answer

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How do you round 243.876 to the nearest tenth, hundredth, ten and thousands
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3 years ago
Please help!!!!
tatyana61 [14]

Answer:

Step-by-step explanation:

From the figure attached,

If the figures shown are congruent (Equal in shape and size), length of all the sides must be equal.

Therefore, sides sides CD and GH must be equal in measures.

Distance between the two points (x_1,y_1) and (x_2,y_2) is given by,

d = \sqrt{(x_2-x_1)^2+(y_2-y_1)^2}

Length of the side CD having ends C(-4, 4) and D(0, 5) will be,

CD = \sqrt{(-4-0)^2+(4-5)^2}

CD = \sqrt{(16+1)}

     = \sqrt{17}

Length of GH having ends G(0, -4) and H(4, -5) will be,

GH = \sqrt{(0-4)^2+(-4+5)^2}

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Therefore, m(CD) = m(GH)

Similarly, we can prove all corresponding sides of two figures equal in measure.

This shows ABCD ≅ EFGH.

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3 years ago
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