<span>In math notation, we've done this: z = (X - μ) / σ = (940 - 850) / 100 = 0.90
where z is the z-score
X is Vivian's score (940)
µ is the mean (850)
σ is the standard deviation (100)
As you may know, in a normal distribution it's expected that about 68% of all observations will fall within 1 standard deviation of the mean, 95% will fall within 2 standard deviations, and 99% will fall within 3 standard deviations.
940 lie before the first standard deviation, in which 16.5% is above it
since 940 is 0.9 from the mean and 0.1 from the first standard deviation
so above it is 17.5 % = 0.175 or about 0.18 </span>
Factor the numerator and denominator and cancel the common factors.
4x^4 - 2
Answer:
-22
Step-by-step explanation:
-12 - 10 = -22
Answer:
School Sucks!
Step-by-step explanation:
Half of this stuff you will never use in real life!
The temperature change from 6am to noon is 11°c