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icang [17]
4 years ago
9

Three students out of a group of 10 seniors will be chosen to speak in front of the school. What is the probability that Ben, Ma

rk, and Ty will be chosen
Mathematics
1 answer:
Luba_88 [7]4 years ago
7 0
3 out of 10

hm, if order does not matter
then it is 3/10 that one of the 3 is chosen
assuming that one was chosen, we now have a probablity of 2/9
then the last is 1/8

so the ending probablity will be 3/10 times 2/9 times 1/8 or 6/720 or 1/120

the probablity will be 1/120

if the order does matter then it is
1/10 times 1/9 times 1/8 or 1/720 because there is 1 choice for each
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Need help with full explanation first to answer extra points!!!
blsea [12.9K]

Answers:

<h2>1. 35 </h2><h2>2. 12</h2>

Step-by-step explanation:

Those brackets indicate absolute value. Absolute value is the distance of a number from 0 on the number line. In other words, negatives don't matter. There is also no such thing as a negative absolute value.

-2     -1      0      1       2

Both -2 and 2 are the same distance from 0, just in the opposite direction. Both numbers have the same absolute value, which is 2.

Hope This helps. If it did, then....

<em>PLEASE MARK BRAINLIEST</em>

7 0
4 years ago
3x 48 x+32 solve for x
gtnhenbr [62]

Answer:

51x+32

Step-by-step explanation:

combine like terms

3x+48x=51x

since 32 is alone it just stays alone

51x+32

hope this helps

4 0
3 years ago
On the number line, a point is moved from -7 to -3. Which of the following phrases describes the move?
nikklg [1K]

Answer:

The point moves four places to the right

Step-by-step explanation:

<---------------------------------------->

-7   -6   -5   -4  -3  -2  -1  0  1   2

6 0
3 years ago
Read 2 more answers
The amount of apples Blake harvested went from 500 lb in 2009 to 425 lb in 2010. Find the percent decrease.
HACTEHA [7]

Answer:

15%

Step-by-step explanation:

The first step is to calculate the decrease

= 500-425

= 75

The percentage decrease can be calculated as follows

= 75/500 ×100

= 0.15×100

= 15%

Hence the percent decrease is 15%

6 0
3 years ago
A normal population has a mean of 12.2 and a standard deviation of 2.5. compute the z value associated with 14.3. what proportio
Citrus2011 [14]
The z-score associated with 14.3 is 0.84.  0.2995 of the population is between 12.2 and 14.3.  0.1894 of the population is less than 10.0.

The formula for a z-score is

z=(X-μ)/σ

With our data, we have:
z=(14.3-12.2)/2.5=0.84

The z-score associated with the mean is 0.5.  To find the proportion of the population between the mean and 14.3, subtract 0.7995 (the proportion of population below the z-score of 0.84, using http://www.z-table.com) and 0.5:

0.7995 - 0.5 = 0.2995.

The z-score for 10.0 is

(10.0-12.2)/2.5 = -0.88.  The proportion of the population less than this is 0.1894.
5 0
3 years ago
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