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Ne4ueva [31]
3 years ago
13

There are 38 chocolates in a box, all identically shaped. there are 15 filled with nuts, 10 with caramel, and 13 are solid choco

late. you randomly select one piece, eat it, and then select a second piece. find the probability of selecting 2 solid chocolates in a row.
Mathematics
2 answers:
Vikentia [17]3 years ago
6 0
Total chocolates = 38
Total Solid chocolates = 13

P(2 solid chocolates) = 13/38 x 12/37 = 78/703

---------------------------------------------------------------------------------------------------
Answer: The probability of selecting 2 solid chocolates in a row is 78/703.
---------------------------------------------------------------------------------------------------
LenKa [72]3 years ago
5 0
<h2>The probability of selecting 2 solid chocolates in a row is 0.11</h2>

Step-by-step explanation:

Total number of chocolates = 38

Probability of an outcome is the ratio of number of favorable outcome to total number of outcomes.

The probability of selecting 2 solid chocolates in a row = Probability of first piece to be solid chocolate x Probability of second piece to be solid chocolate.

Total number of solid chocolate = 13

\texttt{Probability of first piece to be solid chocolate = }\frac{13}{38}\\\\\texttt{Probability of second piece to be solid chocolate = }\frac{12}{37}

\texttt{The probability of selecting 2 solid chocolates in a row = }\frac{13}{38}\times \frac{12}{37}\\\\\texttt{The probability of selecting 2 solid chocolates in a row = }0.11

The probability of selecting 2 solid chocolates in a row = 0.11

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The length of life of an instrument produced by a machine has a normal distribution with a mean of 12 months and standard deviat
Vikentia [17]

Answer:

solved

Step-by-step explanation:

Mean = 12

SD = 2

Answer to part 2)  Less than 7 months

P(x < 7)

P(x < 7) = P(z < (7-12)/2) = P(z < -2.5)

This probability can be obtained by referring to the Z table

Thus P(x < 7) = 0.0062

1) Between 7 and 12 months

P(7 < x < 12) = P( x< 12) - P(x < 7)

We have P(x < 12) = 0 ......[because mean = 12]

and P(x < 7) = 0.0062 ...[this we got is part a]

Thus on plugging these values we get

P( 7 < x < 12) = 0.5 - 0.0062 = 0.4938

Thus P(7 < x < 12) = 0.4938

3

6 0
3 years ago
Read 2 more answers
7. Solve for x, showing each of the steps.<br> (MAFS.8.EE.3.7)<br> x + 5 = -10<br> WIN
fiasKO [112]

Answer:

x = -15

Step-by-step explanation:

4 0
3 years ago
If you answer this ill give u brainliest what is 23*45*98-3
nikdorinn [45]

(23*45*98)-3 = 101,427

the answer is = 101,427

23*45 = 1,035

1,035*98 = 101,430

101,430 - 3 = 101,427

7 0
3 years ago
An irregular parallelogram rotates 360° about the midpoint of its diagonal. How many times does the image of the parallelogram c
Ad libitum [116K]

Answer:

The correct options is A.

Step-by-step explanation:

The each diagonal of an irregular parallelogram divides the parallelogram in two equal and congruent parts. The diagonal bisects each other.

It means, if a irregular parallelogram rotates 180° about the midpoint of its diagonal, then the image of the parallelogram coincide with its preimage during the rotation.

If a irregular parallelogram rotates 360° about the midpoint of its diagonal, then the image of the parallelogram coincide 2 times with its preimage during the rotation.

Therefore the correct option is A.

6 0
3 years ago
Solve for the unknown: g - 24 = 75
kaheart [24]
G - 24 = 75
g = 75 + 24
g = 99

Final answer g = 99
5 0
3 years ago
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