I would have to say the best answer would be Observational study because it cannot be experimental or nonrandomized studies because those two type of studies require to split a population into a group A or group B. It definitely cannot be a sample survey because it is not a survey. An observational study has lots of variables and tells you the result of the study.
3.1415 are the first five numbers in pi. it really just stands for 3.14
Answer:
$151.80 was the total bill including tip.
Step-by-step explanation:
$126.50 x 20% = $25.30
$126.50 + $25.30 = $151.80
Answer:
See below.
Step-by-step explanation:
Formula:
First term: n = 1
Second term: n = 2
Third term: n = 3
Fourth term: n = 4
Tenth term: n = 10
Hopefully, you're talking about Pythagorean theorem.
a^2 + b^2 = c^2
They gave us side a and side c, so we plug in our values
10^2 + b^2 = 16^2
You solve the exponents
100 + b^2 = 256
Subtract 100 on both sides
100 + b^2 = 256
-100 -100
You're left with:
b^2 = 156You square root both sides
b = 12.489...
We round and get our final answer:
b = 12.49
Good luck!