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Marysya12 [62]
3 years ago
13

There are 20 children in the cast of a class play, and 8 of the children are boys. of the boys, 4 have a speaking part in the pl

ay, and of the girls, 8 do not have a speaking part in the play. if a child from the cast of the play is chosen at random, what is the probability that the child has a speaking part?
Mathematics
1 answer:
likoan [24]3 years ago
6 0
The probability that a child with a speaking part is chosen randomly would be 2:5.
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I don't know how to do this!!​
saw5 [17]
3x-1=77 (due to exterior alternate angle)
Or, 3x=77-1
or, 3x=76
or, x=76/3
or, x=25.3
6 0
2 years ago
9,13,43,55 what is the mean absolute deviate (MAD) of their ages
lisov135 [29]

Answer:

The mean absolute deviation of this data \{9,13,43,55\} is MAD =19.

Step-by-step explanation:

The mean absolute deviation (MAD) of a dataset is the average distance between each data point and the mean. It gives us an idea about the variability in a dataset.

The steps to find the MAD include:

  1. find the mean (average)
  2. find the difference between each data value and the mean
  3. take the absolute value of each difference
  4. find the mean (average) of these differences

To find the mean absolute deviation of this data \{9,13,43,55\} you must

Step 1: Calculate the mean.

\:mean=\bar{x}= \frac{9+13+43+55}{4} =\frac{120}{4}=30

Step 2: Calculate the distance between each data point and the mean and take the absolute value of each difference .

|9-30|=21\\|13-30|=17\\|43-30|=13\\|55-30|=25

Step 3: Add the distances together.

21+17+13+25=76

Step 4: Divide the sum by the number of data points.

MAD = \frac{76}{4} =19

7 0
3 years ago
HELP
Serjik [45]

Answer:

A: 5+7+2.5=14.5/3=4.8333333

B: 6+12+3.5=21.5/3=7.16666666

4 0
2 years ago
Read 2 more answers
The water level in a tank decreased 8 inches in 4 minutes. The tank drains at a steady rate. What is the change in the water lev
aalyn [17]
2 inches per minute 8÷4=2
3 0
3 years ago
3/4 divided by 1/2 equals what
daser333 [38]

Answer:

.375

Step-by-step explanation:

((3/4)/1)/2 = 0.375

Hope it helps

5 0
3 years ago
Read 2 more answers
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