<span>we are given with a swimming pool with dimensions
</span>12-ft-by-15-ft. given that there is a <span>3-ft-wide no-slip surface around it, the new dimensions now become (12+3+3) or 18 ft by (15+3+3) or equal to 21 ft. The perimeter is the sum of the sides of the new rectangle. Perimeter is equal to 18+ 18 + 21 + 21 or equal to 78 feet</span>
Plug in 0 for y to find the x intercept:
7x +3(0)= -21
7x=-21
x= -3
Plug in 0 for x to find y intercept:
7(0) + 3y= -21
3y= -21
y= -7
First, find any zero of the polynomial. Since you didn't ask for work, I'll assume it's okay if I use my calculator. Your given polynomial has only one real root which is x=-4.
Now we use the rule that x-a divides the polynomial where a is a zero of said polynomial.
So x+4 divides 2x^3+2x^2-19x+20.
<span>(2x^3+2x^2-19x+20) / (x+4 equals 2x^2-6x+5).
If we factor out a two, we can use the quadratic formula.
2(x^2-3x+2.5) so we have x = (-(-3)+/-(9-4*1*2.5)^(1/2))/2*1)=(3+i)... or (3-i)/2 Where i is the square root of negative one. final answer:
2x^3+2x^2-19x+20=0
then x=-4, (3+i)/2, or (3-i)/2
</span>we have two imaginary number.
I hope it helped you
Hey!
The formula for finding volume of a cylinder is: π · r² · h
Now multiply
Your answer is C)288π units³
Good luck and hope this helps! :)
