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eaves001
28.12.2019 •
Mathematics
What is the solution to this system of linear equations?
2x+y=1
3x-y=-6
a. (-1,3)
b. (1,-1)
c. (2,3)
d. (5,0)
Solved
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Ответ:
A. (-1,3)
Step-by-step explanation:
To solve this problem, enter equation (i) in equation (ii)
2x+y=1 (i)
y= 1 -2x
3x-y=-6 (ii)
3x - (1-2x) = -6
3x - 1 +2x = -6
5x = -5
x = -1. (iii)
Replace (iii) in (i) and clear y
2(-1) + y = 1
y = 1+2
y = 3
The solution is Option A. (-1, 3)
Ответ:
Quantity A. The probability of drawing two red marbles. Quantity B. The probability of drawing exactly one blue marble. Possible Answers: Quantity B is greater.
Step-by-step explanation: