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Fed [463]
3 years ago
8

The results of a survey indicate 50% of seventh-graders watch at least one movie

Mathematics
2 answers:
Kay [80]3 years ago
7 0

Answer:

25 students

Step-by-step explanation:

50% of 50 is 25  

50/2 = 25

sergey [27]3 years ago
7 0

Answer:25

Step-by-step explanation:

The total number of children is 50

So 50%of50children is

50/100×50=2500/100

=25

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PLEASE ANSWER THIS!! 16 POINTS!<br><br> (2/3)*2 + 1/2
alexira [117]

Answer:

=7/6

Step-by-step explanation:

Join 4/3=1:7/3

7/3/2

Apply the fraction rule:=

7/3x2

Multiply the numbers=

7/6

5 0
3 years ago
Read 2 more answers
I NEED THIS ASAP, PLEASE HELP!!!
WINSTONCH [101]

Answer: 22.5 ; 5 ; 14

Step-by-step explanation:

Given the dataset:

{20,22,23,24,26,26,28,29,30}

The lower quartile (Q1) = 1/4(n + 1)th term

Where n = number of observations, n = 9

Q1 = 1/4 (9 + 1)th term

Q1 = 1/4(10) = 2.5

We average the 2nd and 3rd term:

(22 + 23) / 2

45 / 2 = 22.5

B) The interquartile range(IQR) of the dataset :

{62,63,64,65,67,68,68,68,69,74}

IQR = Q3 - Q1

The lower quartile (Q1) = 1/4(n + 1)th term

Where n = number of observations, n = 10

Q1 = 1/4 (10 + 1)th term

Q1 = 1/4(11) = 2.75 term

We take the average of the 2nd and 3rd term:

(63 + 64) / 2

45 / 2 = 63.5

The upper quartile (Q3) = 3/4(n + 1)th term

Where n = number of observations, n = 10

Q3 = 3/4 (10 + 1)th term

Q3 = 3/4(11) = 8.25 term

We take the average of the 8th and 9th term:

(68 + 69) / 2

137 / 2 = 68.5

IQR = Q3 - Q1

IQR = 68.5 - 63.5

IQR = 5

C) give the dataset :

{7,8,8,9,10,12,13,15,16}

The upper quartile (Q3) = 3/4(n + 1)th term

Where n = number of observations, n = 9

Q3 = 3/4 (9 + 1)th term

Q3 = 3/4(10) = 7.5 term

We take the average of the 7th and 8th term:

(13 + 15) / 2

28 / 2 = 14

7 0
3 years ago
The mean of the data set shown in the table is 57. What is the mean absolute deviation?
MAXImum [283]
Is there a picture of the data set? I cannot give you an exact answer without the actual data values, but I can explain how to solve it.
The mean absolute deviation basically tells the average of how much each data value deviates from the mean of the entire data set. Therefore you just find the difference between each value in the data set and 57. Then you take all the differences and find the average by adding them all up and dividing by the number of values.
4 0
3 years ago
Read 2 more answers
Simplify the expression. <br><br> (z^6)^2=
stich3 [128]

Answer:

z^12

Step-by-step explanation:

(z^6)^2  is equivalent to z^(6·2), or z^12.  Here we have multiplied the exponents 6 and 2 together, obtaining 12.

This obeys the rule of exponents   (z^a)^b = z^(ab).

5 0
3 years ago
Evaluate the expression if m = −4, n = 1, p = 2, q = −6, r = 5, and t = −2. <br><br> |12+2t|
ella [17]

Answer:

8

Step-by-step explanation:

it goes to 12-8 which equals 8

6 0
2 years ago
Read 2 more answers
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