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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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The car treves 15 milies in 3 hours.
solong [7]

9514 1404 393

Answer:

  • 5 mph
  • 50 miles

Step-by-step explanation:

To find miles per hour, divide miles by hours:

  (15 mi)/(3 h) = 15/3 mi/h = 5 mi/h

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To find distance, multiply speed by time.

  (5 mi/h) × (10 h) = 50 mi

3 0
3 years ago
Find the X intercepts of the equation f(x) = x^2 - 6x + 6
Arturiano [62]

Answer:

x-intercepts = (x ≈ -0.87), (x ≈ 6.87)

Step-by-step explanation:

let x = 0, in equation for x-intercepts

solve for x using the

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x = <u>−6 ± √ 36 + 24 </u>

               2x

= <u>−6 ± √60</u>

         −2x

 = <u>−6 ± 2 √ 15</u>

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8 0
3 years ago
Giving 15 points cause i rlly need help
yarga [219]
2/9 of the pizza C: if bob has 1/3 of the pizza left and he eats 2/3, then you take 2/3 of 1/3, so you multiply.
8 0
3 years ago
Helpppppp pleaseeeeeee
NeX [460]

Answer: b)

Step-by-step explanation:

You can rule out A) and C), because you have to find area (no adding.)

To do this problem, you can individually multiply the estimated hieght and

width by 3 and then multiply together.

This is because there are 3 walls that each are 9 3/4 tall and 14 1/4 wide. To find total height and width, multiply by 3. Then find total area (lxw)

9 3/4 rounds to 10

14 1/4 rounds to 14

= 3 (10) x 3 (14)

D) is incorrect because you have to multiply each number by 3. (Or you can multiply by 6)

It is B)

4 0
3 years ago
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Elena-2011 [213]

Answer:

what do you have to do this?

Step-by-step explanation:

what grade and type of math is this?

6 0
3 years ago
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