Step-by-step explanation:

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Answer:

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Because y varies inversely as x, therefore

where k = constant.
When x = 6, y = 2.5. Ther efore

Cross multiply.
k = 6 x 2.5 = 15
The equation is

When x = 4, obtain

Answer: a. 3.75
It would be approximately <span>2,719,980,000 beats in their entire lifetime.</span>
Answer:
area of trapezium in terms of x=1/2*x(x+3+x+1)
Step-by-step explanation: