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leonid [27]
3 years ago
8

I need Help please anyone

Mathematics
1 answer:
mezya [45]3 years ago
5 0
0,5 but ye don’t quote me on this one but I have a strong feeling that what it is
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A random sample of five Galaxy 8 smartphones is selected from the production line after final assembly, and the result of the we
Dmitrij [34]

Answer:

a. Mean = 155.1 grams

b. Standard deviation = 0.37

c. Fractional uncertainty = 0.074

Step-by-step explanation:

a. Average weight

This is same as the mean weight;

Mathematically, that would be; sum of the weights/ the number of weights

= (155.1 + 154.8 + 155.5 + 155.3 + 154.6)/5 = 775.3/5 = 155.06 which is approximately 155.1

b. Standard deviation

Mathematically; we calculate that using the formula;

√{(x-mean)^2/(N-1)}

Please check attachment for for the complete breakdown of this

c. Fractional uncertainty

= Standard deviation/number of measurements = 0.37/5 = 0.074

7 0
3 years ago
Replace the ? by the correct mathematics symbol to make expression true<br><br> 18 ? 12 ? 4 ? 5 = 59
Marina CMI [18]
18 ? 12 ? 4 ? 5 = 59 \\  \\ 12/4=3 \\  \\  18*3=54 \\  \\ 54+5=59 \\  \\\textbf{So;}\\(12/4).18+5\\\textbf{Sancak1907}


3 0
3 years ago
Read 2 more answers
Find the length of molding needed for a 10'5" by 9'8" floor
disa [49]
Perimeter = 2(length + width)
p = 2(10'5" + 9'8")
p = 2(19'13")
p = 38'26"

26" = 2'4"

So...
38' + 2'4" = 40' 4" for the perim,eter
4 0
3 years ago
A submarine is diving to a total depth of 45 feet. It descends 15% of the total depth in 1 minute. How deep will the submarine b
telo118 [61]
after 4 mins the sub reaches 27 feet
8 0
3 years ago
If the area of a rectangle 24a2b and the length is 8ab2, what would the width of the rectangle, given that width is found by div
slava [35]
Area of a rectangle: A = 24 a² b
Length: L = 8 a b²
Width: W = A / L = 24 a² b / 8 a b²
Answer:  W = 3 a / b 
5 0
3 years ago
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