Determine if the lines are parallel, perpendicular or neither . 6x+10y=20 and 5x-3y=21 show steps

Perpendicular

Step-by-step explanation:

General equation of line:

Line 1: 6x+10y=20

Convert in general equation

Line 2: 5x-3y=21

Convert in general equation

if slopes are equal then the lines are parallel

If the product of slopes is -1 then they are perpendicular

Since

So, lines are not parallel

Since the product of slopes is -1

Hence the given lines are perpendicular

b. 1.25 hr

step-by-step explanation:

if you have a constant speed of 60 mph, then you have a ratio between 60 mi. to 1 hr. dividing both sides by 60 we get the ratio

1 mi. to

then mult. both sides by 75 we get the ratio

75 mi. to

simplifying we get

75 mi. to

or 1.25 hr.