In a louisiana chili cook-off, 18 of the 40 chilis included
two types of beans. what percentage of the chilis did not
include two types of beans?

55%

Step-by-step explanation:

18 divided by 40= 45%

100%-45%=55% or  

40-18=22

22 divided by 40 = 55%

infinitely many solutions

step-by-step explanation:

we have been given the equation;

2(2x + 3) = -4 + 2(2x + 5)

we need to determine the value of x.

2(2x + 3), we expand this expression to obtain 4x + 6

similarly 2(2x + 5) will become 4x + 10

now we have;

4x + 6 = -4 + 4x + 10

4x + 6 = 4x + 10 - 4

4x + 6 = 4x + 6

the expression on the left hand side is identical to the one on the right hand side. therefore, we are looking at just a single straight line whose equation is;

y = 4x + 6

consequently, we shall have infinitely many solutions

f is the midpoint of