THE SURFACE AREA IS 3220CM^2
A(n)=ar^(n-1) and we can find the rate upon using the ratio of two points...
50/1250=1250r^2/1250r^0
1/25=r^2
r=1/5 so
a(n)=1250(1/5)^1=250
...
You could have also found the geometric mean which is actually quite efficient too...
The geometric mean is equal to the product of a set of elements raised to the 1/n the power where n is the number of multiplicands...in this case:
gm=(1250*50)^(1/2)=250
Supplementary angles sum to 180 degree
Let one angle be x
Then the other angle is x+80
Summing the 2 angle gives
x+x+80=180
2x+80=180
2x=180-80
X=50
Thus the angles are 50 degree and 50+80= 130 degree
Answer:
0.26
Step-by-step explanation:
we know that
the rate of elevation is 2 feet per minute
so
Find out the elevation in 10 minutes
Multiply 2 ft/min by 10 min
2*10=20 ft
therefore
her elevation 10 minutes ago is
0-20=-20 ft ----> is negative because is below sea level
the answer is
-20 ft or 20 ft below the sea level
