12 students is what percent of 60 students?
2 answers:
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4x+30=2(x-10)
4x+30=2x-20
4x-2x= -30-20
2x= -50
x= -25
Mark as brainliest if you find it helpful.
4x+30=2x-20
4x-2x= -30-20
2x= -50
x= -25
Mark as brainliest if you find it helpful.
Answer:
Step-by-step explanation:
-We can use the exponential decay function to estimate the size after 13 years:
Where:
is the size after t years, t is the time, r is the rate of decay and
the original size.
#We substitute and calculate as:
Hence, the forest covers after 13 years.