Answer:
12
Step-by-step explanation:
Differentiate using the power rule
(a
) = na
Given
f(x) = 3x², then
f'(x) = 2 × 3 × 
= 6x, thus
f'(2) = 6 × 2 = 12
We are going to want to change any mixed number into an improper fraction. 2 3/4 is 11/4 and 1 2/5 is 7/5.
We are going to set up a proportion where the lbs are on the top and the money is on the bottom. x is going to be how much it costs for 2 3/4 lbs of lunch meat.
(7/5)/3.36 = (11/4)/x
Cross multiplication \/
7/5x = 9.24
x = 6.60
As a final answer, the 2 3/4 lbs of lunch meat cost $6.60
1. n= 2.67
2. x= 5
3. x= 50
4. r= 13
if you get number four wrong i'm sorry ....
Answer:
1) biased sample
2) random sampling
Step-by-step explanation:
Since the results are based on feedback of students in only one class, it's not a good representative of the entire student body.
Also, since it's a math class there will be a bias.
Better method would be randomly selecting students from the entire school students list and take their feedback
