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Nana76 [90]
3 years ago
15

Lucille has a collection of more than 500 songs on her phone that have a mean duration of 215 seconds

Mathematics
1 answer:
Elena-2011 [213]3 years ago
8 0

Answer:

5

Step-by-step explanation:

The sample mean is given by dividing the standard deviation by the squareroot of SRS

Given standard deviation of 35 and SRS of 49, we know that the squareroot of 49 is 7 ie √49=7

By substituting the given values we can obtain the sample mean as follows.

sample mean=35/√49=35/7=5

The sample mean for the given question is hence 5

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Write down the next decimal number. 0,79; 0,76; 0,73; 0,7; ___​
ycow [4]

Answer:

0.69

Step-by-step explanation:

Hope this helps..

3 0
2 years ago
All the students in the six grade either purchase their lunch or brought their lunch from home on Monday 24% of the students pur
juin [17]
Percent of students brought their lunch from home is 100-24= 76%
So, total students are in the six grade is
190 x 100/76 = 250 students
7 0
3 years ago
The teacher passed out math books. The length is 10 inches and the width is 8 inches. What is the perimeter of each book?
loris [4]
Books are rectangles so that means that opposite sides are equal so if one side is 10 inches then so is the opposite side. same for the 8. the perimeter is the amount around the rectangle so you must add all sides together to find it so

10in+10in+8in+8in= 36in
8 0
3 years ago
How do I simplify? not solve<br>​
Artyom0805 [142]
Ok so u wanna do the equation regularly and then u want to divide the top and bottom by 2 as much as u can but when u can’t divide one by 2 you can’t divide the other one either that’s when u stop
3 0
3 years ago
Simplify the expression:<br> (3n)(2)
Arlecino [84]

Answer:

Step-by-step explanation:

3n+2)! / (3n-3)! = (3n+2)*(3n+1)*(3n)*(3n-1)*(3n-2)*(3n-3)! divided by (3n-3)! which becomes:

23! / 18! = (23 * 22 * 21 * 20 * 19 * 18! divided by 18! which becomes:

(23 * 22 * 21 * 20 * 19)

the result is 4037880

i used my ti-84 to take 23! and divide it by 18! and i got 4037880.

this confirms the solution is correct.

8 0
2 years ago
Read 2 more answers
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