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irinina [24]
3 years ago
10

What was the rate of change between 65 and 75 Please help

Mathematics
1 answer:
Lorico [155]3 years ago
6 0

Answer:

15.38% percent increase

Step-by-step explanation:

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A simple random sample of 100 batteries is selected from a process that produces batteries with a mean lifetime of 32 hours and
Brrunno [24]

Answer:

.b. It is one‐half as large as when n = 100.

Step-by-step explanation:

Given that a  simple random sample of 100 batteries is selected from a process that produces batteries with a mean lifetime of 32 hours and a standard deviation of 3 hours.

i.e. s = 0.3

we obtain se of sample by dividing std devitation by the square root of sample size

i.e. s= \frac{3}{\sqrt{n} }

when n =100 this = 0.3 and

when n =400 this equals 0.15

We find that when sample size is four times as large as original, std deviation becomes 1/2 of the original

Correction option is

.b. It is one‐half as large as when n = 100.

7 0
3 years ago
What the answer is and how?
sladkih [1.3K]

Answer:

PerimeterFigure= pi*DIameter/2= 1.5*pi ft.

Step-by-step explanation:

The perimeter is the length of the figure, since we are dealing with an semi-circle, we can use the perimeter equation for a full circle and divide it by half.

Perimeter= 2pi*R= pi*Diameter.

Since Our figure is a semi circle, as we say earlier, we now will divide the above result by half.

PerimeterFigure= pi*DIameter/2= 1.5*pi ft.

3 0
3 years ago
Help help please please
gregori [183]

Answer:

c=√74

Step-by-step explanation:

h=c

p=5

b=7

Using pythogorean theorem,

h^2=p^2+b^2

c=√(7^2+5^2)

c=√(49+25)

c=√74

3 0
3 years ago
Read 2 more answers
Walter walked 15.5 block from his house to work. It took him 35 minutes. What is his rate in blocks per hour
Sonbull [250]
For this case we first calculate the rate in blocks per minutes.
 rate = (15.5) / (35) = 0.443 blocks per minutes.
 Then, we can go to blocks per hour.
 Remember: 1h = 60min.
 rate = 0.443 * (1/60) = 0.00738 blocks per hour.
 answer
 his rate in blocks per hour is 0.00738 blocks per hour.
6 0
3 years ago
R plus the sum of 7 and s
yuradex [85]

Answer:

R+(7+s)

Step-by-step explanation:


3 0
3 years ago
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