The common ratio r is 6, while the third term (ar²) is 24.
Nth term in a GP is given by the formula ar^n-1, thus the third term is ar²
ar²= 24
thus, a × 36 = 24
a =24/36
The ninth term is given by ar^8
= (24/36)× 6^8
= 1119744.
Answer: There is increase of 4.255 in the amount of carbon in the atmosphere.
Step-by-step explanation:
Since we have given that
Concentration of carbon in Earth's atmosphere in 1800 = 280 ppm
Concentration of carbon in Earth's atmosphere in 2015 = 399 ppm
We need to find the percentage increase in the amount of carbon in the atmosphere.
So, Difference = 399-280 = 119 ppm
so, percentage increase in the amount of carbon is given by
Hence, there is increase of 4.255 in the amount of carbon in the atmosphere.
Option A
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Answer:
6 units
Step-by-step explanation:
The formula for a trapezoid is ((b1+b2)/2)h.
Here, we see b1 = 8 and b2 = 17.
If the area of the trapezoid is 75, we can make the equation :
75 = ((8+17)/2)x , where we would solve for x.
First, we simplify the right side of the equation :
75 = (25/2)x
Multiply both sides by 2 to get rid of the "/2"
150 = 25x
Then divide both sides by 25.
6=x
