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Vikentia [17]
3 years ago
13

What is -20 + (-68)=

Mathematics
2 answers:
sergey [27]3 years ago
7 0
-88 is the answer Also i need characters :)
wlad13 [49]3 years ago
5 0
+ and - next to each other give a - then in this situation it’s -20-68= -88
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3 years ago
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cestrela7 [59]

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11. \frac{8}{32}  =  \frac{1}{4}

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13. \frac{2}{6}  =  \frac{1}{3}

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3 years ago
While working at his neighborhood math tutoring center researching the comprehension level of the students Dion investigated tha
elena-14-01-66 [18.8K]

Answer:

Step-by-step explanation:

While working at his neighborhood math tutoring center researching the comprehension level of the students Dion investigated that the distribution of the student test scores are normally distributed with a mean of 79.13 and a standard deviation of 6.34. What is the probability that the student scores less than 60.11

We solve using z score formula

z = (x-μ)/σ, where x is the raw score, μ is the population mean, and σ is the population standard deviation.

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