Do the ratios 1/2 and 12/20 form a proportion?

No

Step-by-step explanation:1/2 is equal to 10/20 because they are both = to 0.5 but 12/20 is not equal to these so they do not form a proportion

hope this helps mark me brainliest if it did

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

-7/8

step-by-step explanation:

instead of subtracting you add the -6/8 and -1/8