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barxatty [35]
3 years ago
15

Mr. Hines was arranging desks into rows for his classroom . Mr. Hines has 20 desks in his class. Draw an array to show how Mr. H

ines classroom would look if he put 5 desks in each row

Mathematics
2 answers:
yan [13]3 years ago
5 0
It would be 20 divided by 5 so the desks would be in a 5x4 arrangement
emmainna [20.7K]3 years ago
4 0
There would be four rows of 5. If he added one more row of desks he would have 25 desks. 
 Each line is a desk
 
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Use the normal distribution of SAT critical reading scores for which the mean is 502 and the standard deviation is 116. Assume t
PSYCHO15rus [73]

Answer:

(a) 93.19%

(b) 267.3

Step-by-step explanation:

The population mean and standard deviation are given as 502 and 116 respectively.

Consider, <em>X</em> be the random variable that shows the SAT critical reading score is normally distributed.

(a) The percent of the SAT verbal scores are less than 675 can be calculated as:

P(X

Thus, the required percentage is 93.19%

(b)

The number of SAT verbal scores that are expected to be greater than 575 can be calculated as:

P(X>575)=P(\frac{x-502}{116}>\frac{575-502}{116}\\P(X>575)=P(Z>\frac{575-502}{116})\\P(X>575)=P(Z>0.6293)\\P(X>575)=0.2673

So,

Out of 1000 randomly selected SAT verbal scores, 1000(0.2673) = 267.3 are expected to have greater than 575.

8 0
3 years ago
Which rational numbers fall between 2.7 and 2.8 on a number line
Slav-nsk [51]
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2.721, 2.722, 2.723....
2.731....
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7 0
3 years ago
What is the distance between A(0, 5) and B(5, -7) ?
lord [1]

Answer:

The distance between the two points is 13 units.

Step-by-step explanation:

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4 0
3 years ago
5y-10=-25<br><br> Whats the answer?
bagirrra123 [75]
Add 10
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7 0
3 years ago
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Write this in y=mx+b form: 4x-3y=-2
Leona [35]
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7 0
3 years ago
Read 2 more answers
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