Answer:
A
Step-by-step explanation:
To evaluate f(2), substitute x = 2 into f(x), that is
f(2) = 2(2)² - 5(2) = 2(4) - 10 = 8 - 10 = - 2 → A
12 people liked neither.
30-11-7= 12
30: total class
11: people that like chocolate cake
7: people that like white cake
Answer:
Step-by-step explanation:
a)
The mean for ground floor is 20.67
The mean for balcony is 15.8
b)
the difference between the means is ground floor - balcony
20.67 - 15.8 = 4.87
You can talk about it yourself for part c
Answer:
SA=131.94689
Step-by-step explanation:
SA=2πrh+2πr^2
SA=2*3.14*3*4+2*3.14*3^2
SA=131.94689
