If we think about a normal curve / bell curve and the 68-95-99.7 rule, we know that the majority of data will lie within 1, 2, or 3 standard deviations from the mean. The mean is in the center of the curve, and to each side of the mean, 34% of the data lies 1 standard deviation on either side of the mean. Therefore, we need to add and subtract one standard deviation from the mean.
85 + 12 = 97
85 - 12 = 73
Correct Answer: B. 73 - 97
Hope this helps!! :)
Answer:
6:59
Step-by-step explanation:
Hour : Minute
Small hand is hour hand, large hand is minute hand. Minutes go by the small tic marks, where the hours go off of the numbers.
Answer:
decimal form: 0.05
Step-by-step explanation:
To find decimals divide them, so 2 divided by 40 is 0.05.
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Answer:
![\large\boxed{y=(x-3)^2-3}](https://tex.z-dn.net/?f=%5Clarge%5Cboxed%7By%3D%28x-3%29%5E2-3%7D)
Step-by-step explanation:
The vertex form of a quadratic equation <em>y = ax² + bx + c:</em>
<em>y = a(x - h)² + k</em>
(h, k) - coordinates of a vertex
We have the equation <em>y = x² - 6x + 6</em>.
Convert to the vertex form:
![y=x^2-2(x)(3)+6\\\\y=\underbrace{x^2-2(x)(3)+3^2}_{(*)}-3^2+6\qquad\text{use}\ (a-b)^2=a^2-2ab+b^2\qquad(*)\\\\y=(x-3)^2-9+6\\\\y=(x-3)^2-3\to h=3,\ k=-3](https://tex.z-dn.net/?f=y%3Dx%5E2-2%28x%29%283%29%2B6%5C%5C%5C%5Cy%3D%5Cunderbrace%7Bx%5E2-2%28x%29%283%29%2B3%5E2%7D_%7B%28%2A%29%7D-3%5E2%2B6%5Cqquad%5Ctext%7Buse%7D%5C%20%28a-b%29%5E2%3Da%5E2-2ab%2Bb%5E2%5Cqquad%28%2A%29%5C%5C%5C%5Cy%3D%28x-3%29%5E2-9%2B6%5C%5C%5C%5Cy%3D%28x-3%29%5E2-3%5Cto%20h%3D3%2C%5C%20k%3D-3)