Answer:
A
Step-by-step explanation:
Divide the two members of equation by 12
Answer:
x=2
Step-by-step explanation:
5x - 6(x + 1) + 8 = 0
Distribute
5x -6x-6+8 =0
Combine like terms
-x+2 = 0
Add x to each side
-x+2+x = 0+x
2 =x
No it would be Pi *r *r because the r is to the power of 2
Answer:
n > 96
Therefore, the number of samples should be more than 96 for the width of their confidence interval to be no more than 10mg
Step-by-step explanation:
Given;
Standard deviation r= 25mg
Width of confidence interval w= 10mg
Confidence interval of 95%
Margin of error E = w/2 = 10mg/2 = 5mg
Z at 95% = 1.96
Margin of error E = Z(r/√n)
n = (Z×r/E)^2
n = (1.96 × 25/5)^2
n = (9.8)^2
n = 96.04
n > 96
Therefore, the number of samples should be more than 96 for the width of their confidence interval to be no more than 10mg
Answer: In 4 minutes he will make 5 portraits
Step-by-step explanation:
