Two less than seven times a number c is written as
1 answer:
Answer:

Step-by-step explanation:
Let c be the number.
We are asked to write an expression for given verbal description.
7 times the number c would be
.
Two less than seven times a number means 2 subtracted from
.
Two less than seven times a number c would be
.
Therefore, our required expression would be
.
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Answer: 3 units
Step-by-step explanation:
the volume of a cone C = πr²h/3
C = 18π, h =2x, r = diameter/2 = 2x/2 =x
18π = π* x²* 2x/3
divide through by π
18 = x² * 2x/3
multiply through by 3
54 = 2x³
divide through by 2
27 = x³
x =∛27 = 3
x = 3 units = radius