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daser333 [38]
2 years ago
11

Whats is the 39th triangular number

Mathematics
1 answer:
aleksandr82 [10.1K]2 years ago
7 0

Answer:

The 39th triangle number is 780

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galben [10]
Answer: M = (K + 7)/3
8 0
3 years ago
The numbers of pages in the books in a library follow a normal distribution. If the mean number of pages is 180 and the standard
laiz [17]

Answer:

option B.

About 16% of the books have fewer than 150 pages

Step-by-step explanation:

Since we are dealing with a normal distribution

68.27% of the values will fall in the range with the standard deviation

(180-30 , 180+30) = (150, 210)

Approximately 15.86% of the values will be higher than 210

and the rest 15.86% will be lower than 150

So the correct answer is option B.

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4 0
3 years ago
Which of the following is the solution for 6x + 3 ≤ 27
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Answer:

x  ≤  4

Step-by-step explanation:

6x + 3 ≤ 27        subtract 3 both sides

6x ≤ 24              divide 6 both sides

x ≤ 4                   There's your answer

5 0
3 years ago
Select all the expressions that will represent a rational number, without simplifying.
Afina-wow [57]

ANSWER:

Use math websites

5 0
2 years ago
There are 70 sixth graders at Wilson Middle School. Only 40% of the sixth graders will attend the morning assembly. How many six
love history [14]

Answer: 42

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We know that because 40% percent of 70 equals 28. So we do the following-

70 minus 28 equals 42!

Glad to help!

8 0
2 years ago
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