Hi please answer 7-10 I will give you brainlst <3 and extra points .
2 answers:
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Answer:
Step-by-step explanation:
For this exercise you need to remember the Intersecting Chord Theorem.
The Intersecting Chord Theorem states that if two chords are intersecting inside a circle, the products of their segments are equal.
Therefore, based on this and observing the given figure, you know that:
You can identify that:
Now you have to susbstitute those lengths into the equation:
Finally, you must solve for EC in order to find its length. You get that this is:
Answer:
The MAD value will be = 3.
Step-by-step explanation:
The last four month's forecasts for sale are 5, 6, 11, and 12.
Now, we have to find the Mean Absolute Deviation (MAD) of these forecasts.
Now, the mean of the forecast values for the four months is .
Therefore, the sum of absolute deviations of the forecast values from that mean will be = |5 - 8.5| + |6 - 8.5| + |11 - 8.5| + |12 - 8.5| = 3.5 + 2.5 + 2.5 + 3.5 = 12.
Therefore, the MAD value will be = (Answer)