She distributed the 4 to the 2x-1, giving her 9+ 8x -4. she subtracted 8x from both sides leaving her with 4=9-4 which is the same as 4=5
Answer:
y= -1/3x+5
Step-by-step explanation:
-1/3 is the slope (rise/run)
5 is the y-intercept
Answer: 0.0497870 ; 0.87754
Step-by-step explanation:
Given that :
λ = 0.0003
Defining a continuous distribution function :
F(x) = 1 - e^-λx = 1 - e^-0.0003x ; x ≥ 0
a. What proportion of the fans will last at least 10,000 hours?
P(x ≥ 10000) = e^-0.0003(10000) = 0.0497870
b. What proportion of the fans will last at most 7000 hours?
P(x ≥ 7000) = 1 - p(x ≤ 7000) = 1 - e^-0.0003(7000)
1 - 0.12245642825 = 0.87754
Add 8 to one to equal 9. So --> 6x+9=6x.
Or minus 1 from 8 to equal 7. So --> 6x=6x-7.
Then divide both 6's (cancel them out). Which leaves you with either 9 or -7. :)
She will have 1/3 cup left, since she only used 2 1/3 cups
