The points (0, 3), (4, 0), (9, 0), (0, 11), and (14, 0) are plotted on the graph. On a coordinate plane, points (0, 3), (4, 0),
Advocard [28]
Answer:
can you take a picture it might make it easier for me
Answer:
2.2, 11 and 0.55
Step-by-step explanation:
5.50÷5= 1.1 then multiply by 2,10 and half
Answer:
64.5 %
Step-by-step explanation:
Let's start defining the random variable X.
X : '' SAT critical reading scores from the 2014 school year for high school students in the United States ''
We know that X ~ N (μ,σ)
Where μ is the mean and σ is the standard deviation.
⇒ X ~ N (497,115)
If we want to calculate probabilities related to X we need to standardized the random variable. We do this by subtracting the mean to X and then dividing by the standard deviation. This new random variable will be ''Z'' and Z ~ N (0,1)
We can find the probabilies of ''Z'' in any standard normal table.
The cumulative distribution of ''Z'' is the function Φ where :
Φ(a)
Now, we need to calculate the following probability :
If we standardized this :
We know that ≅ Z ⇒
⇒
Φ(2.2) - Φ(-0.41) =
⇒ 64.52% ≅ 64.5%
We find that the probability (given as a percentage) is 64.5%
Answer:
1st one
Step-by-step explanation:
Answer:
9/20
Step-by-step explanation:
Find the common denominator:
1/5 and 1/4
1/5*4/4 = 4/20 and 1/4*5/5 = 5/20
So we can add them together now
4/20 + 5/20 = 9/20
so 9/20 of her customers order fish or chicken