Yes she meet ed her goal because if you do 4,497(total gallons)/281 (the gallons she wanted to use) you get 16.
Answer:
its 4
Step-by-step explanation:
1/2p=p (1-0.2)^t
1/2=(1-0.2)^t
1/2=(0.8)^t
Log (1/2)=t×log (0.8)
T=log(1÷2)÷log(0.8)
T=3.1 years
A(n)=4+4(n-1)
a(n)=4+4n-4
a(n)=4n
76=4n
n=19
The sum of any arithmetic sequence (series are infinite) is:
(a+a(n))(n/2)
The average of the first and last terms times the number of terms, in this case we found that n=19 so:
19(4+76)/2=760
G=3M
G+M=56
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3M+M=56
4M=56
M=56/4=14
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G+14=56
G=42
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So Gabriel is 42 and Mikhail is 14.
