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Schach [20]
3 years ago
10

The scores on a standardized test are normally distributed with the mean of 750 and standard deviation 70. Find the probability

that a score is between 750 and 890.
2.28%


47.7%


50%


13.6%
Mathematics
2 answers:
mafiozo [28]3 years ago
3 0
Hey the answer is C.47.7 
goodluck!
UNO [17]3 years ago
3 0
Konichiwa! Len here
The answer is C.47.7  im vary sorry if the answer is incorrect! hope this helped!
Have a nice day 
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Help me on number 12 13 14 and 15
aleksandr82 [10.1K]

12. 1.625 [terminating]; 13. 0.83 [bar notation over 3 (repeating)]; 14. 900 cm = 9 m; 15. 0.23 cm = 2.3 mm

Repeating decimals are parts of decimals that have repetitive digits; terminating decimals are decimals whose digits end.

Whether you are using Metric or Imperial, you have to determine whether you are going from a small unit to a big unit or vice versa. Then perform your operation. So, in exercise 14, the smaller unit is centimeters, so you would be going from big to small. Exercise 15 has you going from small to big.

There are centimeters in one meter, so multiply 9 by to get 900 centimeters.

There are 10 millimeters in one centimeter, so divide 2.3 by 10 simply by moving the decimal point ONCE to the left [Power of 10].

small to BIG → Division

BIG to small → Multiplication

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3 years ago
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natka813 [3]

Answer:

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3 0
3 years ago
The average of three test scores is 82. The scores on the first test and the third test are the same. The score on the second te
kondaur [170]

Answer:

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Step-by-step explanation:

Let x = the test

(x + x + ( x - 6))/3=82

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3x - 6 + 6 = 246 + 6

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3        3

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5 0
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Okay so we get: subtract m + 8 from 5m + 11

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Step-by-step explanation:

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