Which systems of equations are best solved using addition?
y = 3x + 6
2x - 2y = - 6
2x + 3y = 6
- 2x - 2y = - 6
2x + 3y = -6
8,2x-22y = 6.
8,2x+22y = 6
82x - 22y = - 6
Select all that apply
DA
2x + 3y = 6
- 2x - 2y = - 6
B.
y = 3x + 6
2x - 2y = -6
2x + 3y = -6
D C
D D
8 2x + 2 2y = 6
8.2x - 2.27 = -6
8.2x7327 = 6

x = ± 6i

step-by-step explanation:

x^2 = -36

take the square root of each side

sqrt(x^2) = sqrt(-36)

we know sqrt(ab) = sqrt(a) sqrt(b)

x = ±sqrt(36) sqrt(-1)

we know that sqrt (-1) = i

x = ± 6i

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.