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kondaur [170]
3 years ago
10

The world record for the fastest typing speed is 212 words per minute. How many words per second is this? Round to the nearest t

enth. Show your work
Mathematics
2 answers:
natka813 [3]3 years ago
7 0

Answer:

3.5 words per second

Step-by-step explanation:

There are 60 seconds in a minute. To find the words per seconds, We will need to divide the words per minutes of 212 by 60. Let x equal this number.

x=212/60

Do the division

x=3.5333....

This rounds down since 3 rounds down

x=3.5

They type at 3.5 words per second


taurus [48]3 years ago
6 0

Answer:

3.5

Step-by-step explanation:

212 words / 60 seconds in a minute = 3.53 repeating


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Answer:

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Step-by-step explanation:

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College freshmen took a psychology exam. If the mean is 80, the SD is 10, and the scores have normal distribution, what percent
gayaneshka [121]

Answer:

  (a)  2%

Step-by-step explanation:

A score of 60 is 2 standard deviations below the mean (80 -2·10 = 60). The empirical rule tells you that 95% of the distribution is within 2 standard deviations of the mean. The remaining 5% is split evenly between those that are more than 2 SD above the mean and those that are more than 2 SD below the mean.

That tells you the percentage who failed is about 2.5%. The best answer choice is 2%.

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2 years ago
Algebra
vladimir2022 [97]
(2x + 3y = 12) x (-2)
(4x - 3y = 6) x 1

-4x - 6y = -24
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You can cancel out the x values by adding the two equations together. 
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y = 2

Solve for x now...
4x - 3(2) = 6
4x - 6 = 6
4x = 12
x = 3

Check... (x = 3, y = 2)
2(3) + 3(2) = 12 
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12 = 12 <- this works! 

4(3) - 3(2) = 6
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