Answer:
<u>About 8.5 mins</u>
Step-by-step explanation:
This is a compound decay problem, which goes by the formula:
Where
F is the future amount (we want it to be 380)
P is the present amount (980 now)
r is the rate of decay per minute (10.5% = 10.5/100 = 0.105)
t is the time it takes (what we want to find)
Substituting, we get our answer to be:
SO, it is going to take about 8.54 mins, rounded to nearest tenth (1 decimal), we have:
<u>About 8.5 mins</u>
This is all. Please do revisions on Pythagoras thoerem and try to understand the nature of question.
Answer:
7,982 ft
Step-by-step explanation:
c = πd
25077 = πd
Divide both sides by π
25077/π = d
d = 7,982 ft
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I think the 25077 number in the question might be a typo
Just divide the correct number by 3.14 to get the diameter.
You have the expression:
And the given values are:
a=5
b=3
c=2
You substitute the given values in the equation:
Then you make the opperations:
Finally, you get: