Suppose a heat exchanger costs $1200 and reduces the heating bill by $200 per year what is the payback time?
1 answer:
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Answer:
Step-by-step explanation:
The path covered by the volleyball will be a downward parabola with the vertex being the highest point of the ball.
A general form of a downward parabola is given as:
Where is the vertex of the parabola and 'a' is a constant.
Now, let 'h' be the vertical height and 't' be the time taken.
So, the equation would be of the form:
Now, as per question:
h = 2 seconds, k = 13 feet.
Now, taking a = 1. So, the formula that can be used is:
Answer:
m∠A = 31
b = 13.3
Step-by-step explanation:
