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san4es73 [151]
1 year ago
8

Can u help me wirh some questions please

Mathematics
1 answer:
Pavel [41]1 year ago
5 0

Find the closest whole number estimate for 3.8 and 6.1

The estimate for both numbers are, 4 and 6.

3.8 is rounded up to the nearest whole number, while 6.1 is rounded down to 6because the 1 after the decimal is an insignificant number (its less than 5)

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Which formula is used to calculate the standard deviation of sample data?
Cloud [144]

Answer:

s = sqrt [ Σ ( x i - x ) 2 / ( n - 1 ) ]

Step-by-step explanation:

where s is the sample standard deviation, x is the sample mean, x i is the ith element from the sample, and n is the number of elements in the sample. And finally, the standard deviation is equal to the square root of the variance.

8 0
3 years ago
Read 2 more answers
Loin has read 25 % of a book. If she has been reading for 5 hours, how many more hours will it take her to complete the book?
Anon25 [30]
Well, the answer is 15 hours

Explanation:
Since it took Loin 5 hours to read 25% of the books and the entire book is 100%, 25% is 1/4 of the book. We add on 5 hours to every 1/4 of the book so 1/2=10 hours, 3/4= 15 hours and the entire book =20 hours. So the entire book would take 20 hours to read but the question is How many MORE hours so we subtract 5 hours from 20 hours which equals 15.
4 0
3 years ago
Solve the system of equations Algebraically.
grandymaker [24]
Since y=x+3 (given)
Put value of y in equation x+y=(-3)
x+x+3=(-3)
2x=(-6)
x=(-3)
Put x=(-3) in x+y=(-3)
(-3)+y=(-3)
y=0
So, x=(-3)
y=0
4 0
3 years ago
If the shape of an object changes the perimeter will always change true or false
Ugo [173]

The answer is false due to the object is changes shape not size

6 0
3 years ago
Write an inequality for the following.<br> Jackie spent no more than $40 on a video
ANEK [815]

Answer:

x ≥ $40

Step-by-step explanation:

Jackie didn't spend more than $40 on a video.

x ≥ $40

7 0
3 years ago
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