Answer:
4/7
Step-by-step explanation:
hope this helps
Hi friend
3868000000 in scientific notation is : 3.868* 10^9
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The answer is c because 2+7=9 and 10-2=8 and 9 is greater than 8 so 2+7>10-2
Answer:

Step-by-step explanation:
Let the function of quantity in the lung of air be A(t)
So 
so, A(t) = Amax sin t + b
A(t) = 2.8t⇒ max
A(t) = 0.6t ⇒ min
max value of A(t) occur when sin(t) = 1
and min value of A(t) = 0
So b = 0.6
and A(max) = 2.2

at t = 2 sec volume of a is 0.6
So function reduce to

and t = 5 max value of volume is represent
so,

when t = 5

so the equation becomes
