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Dmitriy789 [7]
3 years ago
7

Find the indicated probability.

Mathematics
1 answer:
Lisa [10]3 years ago
6 0

Answer:

0.007218

Step-by-step explanation:

Total number of moderate exercisers = 81  

We want to find the probability that they are both moderate exercisers

Probability of first person selected is a moderate exercisers = 81/948  

After the selection of the first person who must be moderate exercisers,

Now selecting a different person

Thus, discarding the first person, now 947 subjects are left and 80 moderate exercisers are left.  

So, Probability of second person selected is a moderate exercisers = 80/947  

∴ Probability of 2 different people selected are moderate exercisers = 81/948 × 80/947  

= 540/74813  

= 0.007218!

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jarptica [38.1K]

The answer is:

x=-8

Because:

If you pick a number(-8) to fill in the equation written below

5x+20+5x=5x-20

After applying the -8 to x you get

-40+20-40=-40-20

When you simply the both sides you get

-60=-60

And that’s right -60 is equal to -60!

5 0
4 years ago
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The midpoint of AD is C. The midpoint of AC is B. If A is at (-10,4) and D is at (2,12), find the coordinates of B.
Nata [24]

does this help

The coordinates of D are (-3, -7)

First we need to find the coordinates of B. In order to do that we simply take the average of the two points that make up the segment for which it is the midpoint (A and C).

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-9 + -1 = -10/2 = -5

Average of y's

-4 + 6 = 2/2 = 1

Therefore, the coordinates of B are (-5, 1).

Now we can find D by noting the E will be the average of B and D. So we can use the average equation to determine the values of D.

Average of x's

(B + D)/2 = E

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Average of y's

(B + D)/2 = E

(1 + D)/2 = -3

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D = -7

Now we know the coordinates of D to be (-3, -7)

7 0
3 years ago
Joan bought a 3-pound bag of shrimp for 19.55. What is the unit price per ounce of shrimp?
sveta [45]

Answer:

$0.407291667 per ounce

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in order to find the price per ounce, we need to divide the total price by the number of ounces

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Gnoma [55]

Answer:

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There are 35 red marbles, 8 blue marbles, and 7 green marbles in a bag. What is the theoretical probability of randomly drawing
abruzzese [7]
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4 years ago
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