Which equation can be used to find N, the distance between 3/8 and 61/64 on the number line?
1 answer:
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Answer:
0.0359
Step-by-step explanation:
Data provided:
mean values of three independent times are 15, 30, and 20 minutes
the standard deviations are 2, 1, and 1.6 minutes
Now,
New Mean = 15 + 30 + 25 = 65
Variance = ( standard deviation )²
or
Variance = 2² + 1² + 1.6² = 7.56
therefore,
Standard deviation = √variance
or
Standard deviation = 2.75
Thus,
Z-value =
or
Z-value = - 1.81
from the Z-table
the Probability of Z ≤ -1.81 = 0.0359
Answer:
Step-by-step explanation:
I have attached a written explanation to help :).
Let's say each side of the square =
If we put 7 squares in a row to make the rectangle,
length of the rectangle =
Area of a rectangle = length multiplied by width
Area of rectangle = multiplied by
=
We are also told that the total area = 567
So
Now solve for .
Divide both sides by 7.
Then square root both sides to find
= 9
Finally, the question asks to find the length of the collage which we said was and we know
Length of collage = multiplied by
= ?
