What do the following two equations represent?

-2x+4y = 5−2x+4y=5minus, 2, x, plus, 4, y, equals, 5

-12x-6y = 1−12x−6y=1

(choice a)
a
equal lines

(choice b)
b
parallel lines

(choice c)
c
perpendicular lines

(choice d)
d
none of the above

C. Perpendicular lines

Step-by-step explanation:

The given system is:

We need to rewrite both lines in slope-intercept form.

This implies:

Simplify:

The slope of the first line is the negative reciprocal of the slope of the second line.

The two lines are perpendicular

The third option is correct

80π/3 or about 83.775

step-by-step explanation:

since a cone is 1/3 of a cylinder, we need to find the base's area. since area = πr^2, we get 16π. then, multiplying this by 5, we get 80π. dividing by 3, since the cone's volume is 1/3 of that of a cylinder's, we get 80π/3.

hope this !

answer: ♡♡♡♡♡♡♡♡♡♡

step-by-step explanation: