Using the substitution method, Vito is solving the following system of equations algebraically: y + 3x = -4
2x – 3y = -21
Which equivalent equation could Vito use?
1.
2-3x – 4) + 3x = -21
2.
2(3x – 4) + 3x = -21
3.
2x - 3(-3x – 4) = -21
4
2x - 3(3x - 4) = -21
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x = 3 ± √(5+y)

answer:   35 % is the probability of a late departure or an early arrival.

step-by-step explanation:

let l represents the late departure and e represents the early departure.

then, according to the question,

p(l) = 12 %,   p(e) = 27 % and = 4 %

and, we have to find out,

but, we know that,

which is the required equation that will use to find the probability of a late departure or an early departure.

therefore,   the probability of a late departure or an early arrival =   35 %

i would you but i don't under stand the qustion

step-by-step explanation: