Mike planted 25 carrot plants. A rabbit ate 6 of the plants. What percent of the plants does Mike have left?
76%
She has to get around 700 to 800 points in order to get 80%
Interest+original=amount to pay off
intrest=prinicpal times rate times time
interest=2000 times 3 times 0.08
interest=480
so total is 2000+480 or 2480 to pay off
Answer:
It'll take approximately 9.1 minutes
Step-by-step explanation:
The decay of this element can be modeled by the following expression:
m(t) = 540*(1 - 0.179)^t
Where m is the mass of the element in a given minute t. This expression comes from a compounded interest formula, with negative rate, since they will work in the same manner. Therefore to find how long until it reaches 90 g, we need to make m = 90 and solve for t.
90 = 540*(0.821)^t
(0.821)^t = 90 / 540
(0.821)^t = 1/6
ln(0.821^t) = ln(1/6)
t*ln(0.821) = ln(1) - ln(6)
t*ln(0.821) = - ln(6)
t = -ln(6)/ln(0.821) = 9.08452
It'll take approximately 9.1 minutes
