to determine a student's grade, a teacher throws out the lowest grade obtained on 5 tests, averages the remaining grades, and ro
2 answers:
Answer:
Betty will get 85 grade.
Step-by-step explanation:
Betty scored 75,90,88,72, and 86 on her tests.
As given the teacher throws out the lowest grade, we will not consider 72.
Now the teacher averages the remaining grades, and round up to the nearest integer.
So, taking the average we get;
= 84.75
Rounding this to nearest integer, we get 85.
Hence, Betty will get 85 grade.
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Answer:
The slope of tangent at point (1,-2) is .
Step-by-step explanation:
The given equation of ellipse is
Differentiate both sides with respect to x.
Calculate the value of \frac{dy}{dx} at (1,-2).
Therefore the slope of tangent at point (1,-2) is .