Find the value of y, rounded to the nearest tenth
2 answers:
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Answer: The maximum error = $105.76.
Step-by-step explanation:
Formula to find the maximum error:
, where n= sample size.
= Population standard deviation
z*= Critical value(two-tailed).
As per given , we have
n= 35
For 98% confidence , the significance level =
By z-table , the critical value (two -tailed) =
Now , the maximum error =
Hence, With 98% confidence level , the maximum error = $105.76.
Given:
The two endpoints of a vector are P = (2, 9) and Q = (4, 14).
To find:
The component form and magnitude of vector PQ .
Solution:
A vector is defined as
Where, is the initial point and
is the terminal point.
Two endpoints of a vector are P = (2, 9) and Q = (4, 14). So, the vector PQ is
Component form of vector PQ is .
The magnitude of a vector is
The magnitude of vector PQ is:
Therefore, the correct option is A.
Answer: 1 inch =7 feet
Step-by-step explanation:
Scale factor =
The length of the wingspan in model is 8 inches.
The length of the wingspan of the actual airplane is 56 feet in length.
Scale factor =
i.e. 1 inch of model gives 7 actual feet.
Required Scale: 1 inch=7 feet