Complete Question:
Elijah asked 300 students at his school to name their favorite type of pet. The results are shown in the pie chart below. How many students chose fish as their favorite pet?
a. 180 b. 18 c. 54 d. 30
*Check the attachment for the pie chart
Answer:
C. 54
Step-by-step explanation:
Total number of students under survey = 300
Percentage of students who chose fish as their favorite = 18%
Number of students who chose fish as their favorite pet =
54 students chose fish as their favorite pet.
Answer:
Variance for a total of 150 games is 20.67
Step-by-step explanation:
If x follows binomial distribution with parameters n and p then the probability distribution of tends to N (0.1)
As where E(x)= np, var (x) = npq
var (x) = 1500.165 (1-0.165)
(since, n= 150, p=0.165,
q = 1-p = 1-0.165)
= 20.66625
var (x) = 20.67
variance for a total of 150 games is 20.67
Step-by-step explanation:
given
a = - 3
3a² = 3 * ( -3) ²
= 3 * 9
= 27
The value of 3a² is 27.
2/5 + 3/5 = 5/5= 1
Which means 3+1=4
The ? Is 3/5
2(3*4-2x)
(6*8-4x)
(48-4x)
12*48-4x
576-4x