Which of the following choices is equivalent when solving the system by the elimination method? x + 2y = 1
2x + y = 12

a)x + 2y = 1
-4x − 2y = -24

b)x + 2y = 1
-2x − 2y = -1

c)x + 2y = 1
4x − 2y = 24

d)None of these choices are correct.

C

Step-by-step explanation:

!

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.

answer. d.289 hope that