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aksik [14]
3 years ago
11

Your friend brings 15 chocolate cupcakes and 15 vanilla cupcakes to school. Students will take turns picking a pair of cupcakes

at random. What is the probability that the first student will pick 2 chocolate cupcakes?
Mathematics
2 answers:
Zolol [24]3 years ago
7 0
Probability of 1st chocolate = 15/30 = 1/2
Probability of 2nd after picking chocolate = 14/29

Multiply the 2 probabilities together
1/2 * 14/29 = 14/58 = 7/29
Gekata [30.6K]3 years ago
6 0
I believe it is 1/3, but probability is not my strong suit.
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Consider the following random experiment. First, roll a die and observe the number of dots facing up; then, toss a coin the numb
kipiarov [429]

Answer:

{(1, 0), (1, 1), (2,0), (2,1), (2, 2), (3,0), (3,1), (3,2), (3,3), (4, 0), (4,1), (4,2), (4,3), (4,4), (5,0), (5,1),(5,2), (5,3), (5,4), (5,5), (6,0), (6,1),(6,2), (6,3), (6,4), (6,5), (6,6)}

B.)

{(2,2), (3,2), (4,2), (4,4), (5,2), (5,4), (6,2), (6,4), (6,6)}

Step-by-step explanation:

Sample space :

Die roll, then number of coin tosses based on the outcome of the die roll, then number of heada from the toss(es) is recorded along with the outcome of the die roll.

{(1, 0), (1, 1), (2,0), (2,1), (2, 2), (3,0), (3,1), (3,2), (3,3), (4, 0), (4,1), (4,2), (4,3), (4,4), (5,0), (5,1),(5,2), (5,3), (5,4), (5,5), (6,0), (6,1),(6,2), (6,3), (6,4), (6,5), (6,6)}

Event that the total number of head is even:

{(2,2), (3,2), (4,2), (4,4), (5,2), (5,4), (6,2), (6,4), (6,6)}

3 0
2 years ago
A coffee table is on sale for 20% off the original price of $115. If there is 7.5% sales tax, what is the final price of the cof
alekssr [168]

Answer:

98.9

Step-by-step explanation:

115 - 20% = 92
92 + 7.5% = 98.9

7 0
2 years ago
Read 2 more answers
a man wanted to paint a cylinder gas tank. What amount of surface area will need to be covered if it had a radius of 14 inches a
Over [174]

Answer:

224

Step-by-step explanation:

  1. in a cylinder  the  only sides that would actually count is the top and bottom
  2. you would multiply the top and bottom.
  3. 14 x 16 = 224
  4. if I'm wrong let me know
5 0
3 years ago
3x + x + x + x − 3 − 2 = 7 + x + x In the equation above, what is the value of x? A) −5 7 B) 1 C) 12 7 D) 3
oksano4ka [1.4K]

Answer:

x=3

Step-by-step explanation:

3x + x + x + x − 3 − 2 = 7 + x + x

Combine like terms

6x -5 = 7+2x

subtract 2x from each side

6x-2x -5 = 7+2x-2x

4x -5 = 7

Add 5 to each side

4x-5 +5 = 7+5

4x =12

Divide by 4

4x/4 =12/4

x=3

6 0
3 years ago
0.33333 round to nearest tenths
Pavlova-9 [17]
0.3 that is bc 3 is not high enough to make it a 4. Hope this helps.
7 0
3 years ago
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