Answer:
The answer to your question is below
Step-by-step explanation:
Part 1.- His mistake was that he drew the parabola upwards and it must be downwards.
Part 2.
x Substitution f(x)
-5 -(-5+2)² - 1 - 10
1 -(1 + 2)² - 1 - 10
2 -(2 + 2)² - 1 - 17
The value of f(x) is always negative indicating that the parabola goes downwards.
Answer:
- 59/40
Step-by-step explanation:
Answer:
5.32
Step-by-step explanation:
It took me a while to figure this out myself, here is how I found the answer:
The question gives sample number(80) and the standard error(0.595).
To get the standard error number they use this equation:
So to find the standard deviation, take and times it by the standard error to get the answer.
x 0.595 = 5.321841786449499
And then round to the nearest hundredth: 5.32
2/3 + 1/3 = 1. or 1/1 if you're looking for a fraction.