Answer:
3x+3
Step-by-step explanation:
40 because you divide 160 by 4 because there are 4 sides on a square
1.25 also bc they are parallel
Answer:
k = -1, -2.
Step-by-step explanation:
4k^2+12k+8 = 0
Divide by 4:
4(k^2 + 3x + 2) = 0
4(k + 1)(k + 2) = 0
k = -1, -2.
Mean = 12000
Standard Deviation = 2000
We have to find how many standard deviations is 14,500 away from the mean.
This can be achieved by calculating the z-score
Z-score tells us how many standard deviations above or below is a sample value from the mean. A positive z value shows, sample value is above the mean.
z score can be calculated as = (Sample Value - Mean )/Standard Deviation)
So,
Z-score =
This means, 14,500 is 1.25 standard deviations above the mean value 12,000.