The equation of the parabola whose focus is at (0, 5) and directrix at y = -5 is:
1 answer:
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Answer:
C
Step-by-step explanation:
The area (A) of a triangle is calculated as
A = bh ( b is the base and h the perpendicular height )
Here b = 19 and h = 16 , thus
A = 0.5 × 19 × 16 = 152 yd² → C
Answer:
4.0486
Step-by-step explanation:
The margin of error is calculated using
Where n=60 is the sample size and is the population standard deviation.
The critical value corresponding to 95% confidence interval is
We substitute the values to obtain;