Answer:
Step-by-step explanation:
-2x -3y = 5
4x + 3y = 17
2x = 22
x = 11
4(2) + 3y = 17
8 + 3y = 17
3y = 9
y = 3
(11,3)
Answer:
B
Step-by-step explanation:
Variance can be said to be a measure of dispersion for a random sample.
Variance = pq/n
When given the variance, we can find the standard deviation.
Standard deviation = √variance
= √pq/n
Answer:
Step-by-step explanation:
-5/2<-2<1.7
use number line
Given
A survey found that 12 out of 30 people preferred bacon over sausage.
Find out the what percent of people prefer bacon over sausage.
To proof
As given in the question
survey found that 12 out of 30 people preferred bacon over sausage.
Total number of people = 30
people preferred bacon over sausage = 12
Formula
put the value in the formula

solve the above
percent of people prefer bacon over sausage = 40 %
Hence proved