Half of 40 = 0.5 x 40 = 20 .
One fourth of 20 is smaller than 20.
You don't even have to calculate it.
the equations are already in slope-intercept form, therefore

so their slopes are 2 and 4.
parallel lines have exactly the same slope, these ones do not, so they're not parallel.
perpendicular lines, have negative reciprocal slopes, in short, their product gives -1, 2*4 ≠ -1, so they're not perpendicular either.
Answer:
a^2+2ab+b^2
Step-by-step explanation:
FOIL method is First variables Outer variables Inner variables Last variables
(a+b)^2 rewritten is (a+b)(a+b)
F - a*a
O - a*b
I - a*b
L - b*b
a*a+a*b+a*b+b*b
simplify
a^2+2ab+b^2
Multiply 4.62 by a number that to get an integer.
Such as multiply by 5 is 23.10 so to get rid of 0.1, just multiply by 50 then it becomes 231.
so that means...
4.62 = 231 / 50
or a simple answer would be multiply by 100, then you get 462.
so....
4.62 = 462 / 100
And then simplify, it is divisible by 2 so the answer is 231/50