Elimination method 5x+3y=-6 -4x-5y=-3

The correct answer is (-3, 3)

Step-by-step explanation:

In order to use the elimination method, multiply the top equation by 4 and the bottom equation by 5. Then add them together.

20x + 12y = -24

-20x - 25y = -15

-13y = -39

y = 3

Now that we have the value of y, we can plug it into either equation to get the final answer.

5x + 3y = -6

5x + 3(3) = -6

5x + 9 = -6

5x = -15

x = -3

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.

irrational, cannot