Three fourths of a number decreased by nine is at least forty two
1 answer:
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Answer:
Answer: Option d. 4×
Step-by-step explanation:
In any sequence where ratio of the terms is given we always use the formula
A(n) = A(1)
Here A(n) is the term n
A(1) is the first term
n= number of trms
and r = ration of the terms
Here the given sequence is 40,0.4,0.004........
So A(1) = 40
Ratio 'r' of second and first term is =0.4/40=1/100
We have to find 7th term so n=7
Now we put the values in the formula
A(7) =
=
=
= 40×
= 4×
Check the picture below.
so is really just a cylinder with a cone on the side, notice, since the diameter of the base is 4, the radius is half that then.
so we just simply get the volume of the cylinder, and the cone, and sum them up
so is really just a cylinder with a cone on the side, notice, since the diameter of the base is 4, the radius is half that then.
so we just simply get the volume of the cylinder, and the cone, and sum them up