Answer:
The percent error of the measurement, to the nearest tenth of a percent is 
Step-by-step explanation:
Estimated length of a line = 12.4 inches
Actual length of the line = 15.7 inches
Error = 15.7 - 12.4 = 3.3 inches
Percent error of the measurement
≈ 21.0
So, the percent error of the measurement, to the nearest tenth of a percent is 
Answer:
1,25%
Step-by-step explanation:
Aby policzyć stopę procentową należy wykorzystać podzielić otrzymany zarobek (125$) przez kwotę zainwestowaną (10.000$) a następnie pomnożyć przez 100, aby otrzymać wartość wyrażoną w procentach.
I tak mamy
x 100 [%] = 1,25%
I’m not too sure on this one

My Work/Reasoning:
First we find the sum of 1/3 and 1/5.

Then, we find the multiplicative inverse, I guess it's also known as the reciprocal.

turns into

Finally, we simplify.
There are 5 people who can be guards, 2 will be guards. Since each person has the same chance of becoming a guard, each person has a 2/5 chance of being a guard which makes it unlikely for Diana to become a guard.