Given:
The equation is
To find:
The simpler equivalent form and solve the given equation.
Solution:
We have,
It can be written as
Multiply both sides by 7.
Divide both sides by 3.
Therefore, the simpler equivalent form of the given equation is and the solution is x=4.
($0.45 x 7.2) + ($0.45 x 6.8) <span>
= $3.24 + $3.06
= $6.30
answer
</span><span>$6.30</span><span>
</span>
Answer:
11
n²
Step-by-step explanation:
Given
= 
× 
× 
= 11 × × n²
= 11n²
Answer:
Step-by-step explanation:
What is the margin of error if the sample size is 100, sample mean is 68.0, and standard deviation is 4.0
The Margin of error formula =
± z score × s/√n
Where s = standard deviation= 4
n= Number for samples = 100
z = z score of confidence interval
Margin of error = ± z × 4/√100
Margin of error = ±z × 4/10
=± z × 2/5
= ± z × 0.4
= ± 0.4z
Margin of error = ± 0.4z
