Answer:
180-2x-60= 3x-40
180-20=5x
160=5x
32= x
Step-by-step explanation:
W-l00-7to be all to become one
A and C i believe that’s correct
Y=-4x+5 I believe you just rewrite the equation like this
Answer: The proportion that will qualify is 0.0314 or 3.14%.
First, we need to find the z-score of a time of 128 seconds. To do this, we find the difference of the mean and score and divide by the standard deviation.
(128 - 141) / 7 = -1.86
Now, use a standard normal distribution table to determine the percent below a z-score of -1.86. That value is 0.0314 or 3.14%.
