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krek1111 [17]
3 years ago
7

There is an urn containing 10 marbles numbered 1 to 10. We sample 4 marbles without replacement. What is the probability that ou

r sample contains the marbles labeled 1 and 2
Mathematics
1 answer:
Kipish [7]3 years ago
8 0

Answer:

Step-by-step explanation:

The easiest way to do this is to assume you don't get a 1 or 2. You make your first draw from 8.

8 * 7 * 6 * 5 = 1680

The total number of ways of drawing 4 marbles is

10*9 * 8 * 7 = 5040

P(`(1 or 2) ) = 1680 / 5040 = 0.33333

The probability of getting a 1 or 2 in 4 throws = 1 - 0.3333 = 0.66667

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Westkost [7]

Answer: The best estimate for the amount of money she saves to buy clothes = $ 562.5

Step-by-step explanation:

Given: Breanna saves 75% of her earnings to buy new school clothes.

Earnings for Breanna = $ 750

The amount of money she saves to buy clothes = 75% of 750

= 0.75 x  750   [75%= 0.75]

= $ 562.5

Hence, the best estimate for the amount of money she saves to buy clothes =  $ 562.5

5 0
3 years ago
Which of the following can be a solution to the inequality below?<br> 2x &gt; 6.<br> Pls send help
Citrus2011 [14]

Answer:

x>3

Step-by-step explanation:

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3 0
3 years ago
A horse 64 feet from the center of a merry-go-round makes 27 revolutions. In order to travel the same distance, how many revolut
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Answer:

108

Step-by-step explanation:

64*27=1728

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hope this helps!

5 0
3 years ago
Use Order of Operations to simplify. 42 – (28 ÷ 7) + 111
Mariulka [41]
do parentheses first which gives you 42-4+111 then aubtract to get 38+111 which equals 149
8 0
3 years ago
Read 2 more answers
Can someone please help me
Vikki [24]
$16(4 shirts)= $64
5%=$64(0.05)=$3.20
Jamal's total is $67.20
4 0
3 years ago
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