Answer:
Step-by-step explanation:
Applying the formula for normal distribution,
z = (x - u)/s
Where u = mean
s = standard deviation
x = the monthly utility bill in dollars
From the information given,
s = 23
u = 121
The probability that a randomly selected utility bill is between $110 and $130 is expressed as
P(110 lesser than or equal to x lesser than or equal to 130)
For 110
z1 = (110 - 121)/23 = - 11/23
z1 = - 0.4783
Looking at the normal distribution table,
The corresponding z score is 0.3192
For 130
z2 = (130 - 121)/23 = 9/23
z2 = 0.391
Looking at the normal distribution table,
The corresponding z score is 0.65173
P(110 lesser than or equal to x lesser than or equal to 130) = 0.65173 - 0.3192 = 0.33253
Answer:
2
Step-by-step explanation:
when you add 1 to 1, it equals 2
Answer:
4.5 or 4.69 because you round it
Hey there! :D
So, I know this can be very, very confusing. I will try my best to explain this so it is understandable.
We need to start finding it by finding the slope of the line.
You can use the rise/run method, but I prefer to put it into this equation:
m=(y2-y1)/(x2-x1)
Plug in a pair of points on the line. (-2,0) and (0,-4)
m=(-4-0)/(0-(-2)
m=(-4-0)/(0+2)
m=-4/2
m=-2
The slope is -2.
So, plug that into point-slope form. Use slope for m, and (x1,y1) as a pair of points.
y-y1= m(x-x1)
y-(-4)= -2(x-0)
y+4=-2(x-0)
y+4= -2x
Now, lastly, we just need to put in in slope-intercept form.
y=mx+b
Subtract 4 on both sides.
y=-2x-4 <== equation of the line
I hope this helps!
~kaikers
I got V = X to the power of 5