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kogti [31]
3 years ago
7

There are four nickels, three dimes, and three quarters in your pocket. You randomly pick three coins and place them on a counte

r. The first coin is a nickel, the second is a dime, and the third is a quarter. Find the probability of this occurring.
Mathematics
1 answer:
kupik [55]3 years ago
3 0

Total coins = 10 ( 4 + 3 + 3 = 10).

The probability of picking a nickel first = 4/10 = 2/5 ( 4 nickels out of 10 total).

The probability of picking a dime second = 3/9 = 1/3 ( 3 dimes out of 9 coins left).

The probability of picking the third coin as a quarter = 3/8 ( 3 quarters out of 8 coins left).

The probability of picking all three in that order = 2/5 x 1/3 x 3/8 = 1/20

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THE AP CALCULUS EXAM SCORES WERE RELEASED IN JULY. THE SECONDARY MATH SPECIALIST PREPARED THE BOX PLOT SHOWN TO PRESENT THE SCOR
Ganezh [65]

Answer : option A

To find the range of scores that represents the middle 50 % of the student who took the test , we find inter quartile

Inter quartile range is the middle 50% of the given range of scores.

The difference between the upper quartile and lower quartile is the inter quartile that is middle 50%

From the diagram , we can see that

Upper quartile = 89

lower quartile = 65

So range is 65%  to 89%

8 0
4 years ago
Write the equation from the graph in slope intercept form​
Oxana [17]

Answer:

y=2/3x−4

Step-by-step explanation:

5 0
3 years ago
Read 2 more answers
Find the surface area of the composite solid.
Scilla [17]

Answer with Step-by-step explanation:

The given figure is a cuboid.

We know that surface area(S) of cuboid is given by:

S=2(lb+bh+hl)

Where l is the length, b is the breath and h is the height

Here, l=12 mm

         b=6 mm

and h=(7+2) mm=9 mm

Surface Area= 2(12×6+6×9+9×12)

                    =2(72+54+108)

                   = 2×234

                   = 468 mm²

Hence, Correct option is:

C. 468 mm squared

4 0
3 years ago
2x + 4y ≤ 10 x-2y&gt;1 <br><br> Is (3,1) a solution to this system? Why or why not?
Jlenok [28]
Yes it is, the two lines intersect that point.
8 0
3 years ago
I am thinking of a number such that 6 less than the product of 7 and this number is 85 which number is she thinking of
Artemon [7]
6 less than the product of 7 and this number is 85.
6 less than (the product of (7 and this number)) is 85.

6 less than (the product of 7 and x) = 85
6 less than (7 * x) = 85
(7 * x) - 6 = 85

Now you solve! Make sure that whatever you do to one side you also do to the other:
7x - 6 = 85
7x - 6 + 6 = 85 + 6
7x = 91
7x /7 = 91 /7
x = 13

Hope this helps! :)
4 0
3 years ago
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