Answer: 0.3413
Step-by-step explanation:
Given: an American household generates an average of 28 pounds of newspaper for garbage or recycling. Assume the standard deviation is 2 pounds.
Let 
.
Let x be the random variable that denotes the amount of newspaper for garbage generated by each household each month.
If the data conforms to a normal distribution and a household is selected at random, the probability of its generating between 28 and 30 pounds per month is about
Hence, the required probability is 0.3413.
(x-4)/10=7/5
x-4=70/5
x-4=14
x=18
here you go, practice it once or twice. good luck
Answer:
Hello,
answer B
Step-by-step explanation:
Vertex is (-3,-1)
The equation of the parabola should be:
y=k*(x+3)²-1
(0,8) is a point of the parabola:
8=k*(0+3)²-1
8+1=9k
k=1
Equation is y=(x+3)²-1
Answer B
Answer:
45%
Step-by-step explanation:
- Add 9 and 11 to see how many students there are in all. The answer to this is 20.
- Divide 9 by 20. You get .45, which is equal to 45%.
Answer: I think it’s A - 28
Step by step:
For the sum : if you add 11 + 17 it gives you 28.
For the division: if you divided 28 by 3 it would equal 9.3.
So I think it’s 28 I’m not so sure
