When writing the equation keep in mind that 7 + x is said as a term that is squared so it has to be squared while it's still together; (7 + x)².
Answer:
105 minutes
Step-by-step explanation:
we know that
Michael can type 4 pages of his term paper in 30 minutes
so
using proportion
Find out how long will it take him to type the paper if it has 14 pages
Answer:Write 9/20 as a percent. Use equivalent fractions: 9/20 = 45/100 = 45%.
Step-by-step explanation:
The missing number is 15. .
Answer: We should expect its actual return in any particular year to be between<u> -40%</u> and<u> 80%</u>.
Step-by-step explanation:
Given : The continuously compounded annual return on a stock is normally distributed with a mean 20% and standard deviation of 30%.
From normal z-table, the z-value corresponds to 95.44 confidence is 2.
Therefore , the interval limits for 95.44 confidence level will be :
Lower limit = Mean -2(Standard deviation) = 20% -2(30%)= 20%-60%=-40%
Upper limit = Mean +2(Standard deviation)=20% +2(30%)= 20%+60%=80%
Hence, we should expect its actual return in any particular year to be between<u> -40%</u> and<u> 80%</u>.
