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BabaBlast [244]
3 years ago
5

In a research sample of high school students, the variable “number of Instagram followers” formed normal distribution with a mea

n of 45 and a standard deviation of 16. If the research sample contained 500 students, approximately how many had 21 or fewer friends?
A)7
B)467
C)21
D)33
Mathematics
1 answer:
Papessa [141]3 years ago
5 0
Approximately it would be C 21
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Evaluate |5 - 15|.<br><br> -10<br> 10<br> 20<br> -20<br> Evaluate 0 × |-6|.<br><br> -6<br> 6<br> 0
kramer

|a| = a for a ≥ 0

examples

|2| = 2, |4| = 4, |234| = 234, |1/2| = 1/2, |0| = 0

|a| = -a for a < 0

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|-4| = -(-4) = 4, |-6| = -(-6), |-123| = 123, |-4/5| = 4/5

|5 - 15| = | - 10| = 10

0 × |-6| = 0

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Pani-rosa [81]
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ratelena [41]

Answer:

LCM of 3, 5, and 6 is the smallest number among all common multiples of 3, 5, and 6. The first few multiples of 3, 5, and 6 are (3, 6, 9, 12, 15 . . .), (5, 10, 15, 20, 25 . . .), and (6, 12, 18, 24, 30 . . .) respectively. There are 3 commonly used methods to find LCM of 3, 5, 6 - by division method, by prime factorization, and by listing multiples.

Step-by-step explanation:

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tiny-mole [99]
Mult. $7.25 by 4 times 4 (4 PIZZAS per week, for 4 weeks):

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