Answer:
4
Step-by-step explanation:
3(x+6) = 30
(x+6) = 30/3
x = 10 - 6
x = 4
Using the given equation, take the square root of both sides. Both 169 and 9 are perfect squares, so the left side becomes plus or minus 13/3, which is rational. Six plus 13/3 is a rational number, and 6 minus 13/3 is also a rational number. If the solutions of a quadratic equation are rational, then the equation is factorable.
The answer is here in the picture
Answer:
<u>volume of a cone</u> = 1/3*(πr²h)
Step-by-step explanation:
The Volume of a cone can be expressed using the formula
<u>volume of a cone </u>= 1/3*(πr²h)
Now if r=3 in and h= 9 in
= 1/3( π (3)²9)
= 27Π in 3
78 is the correct answer.