Is (4, -2) the solution of the system of equations shown
1 answer:
No, because if you substitute (4, -2) into x and y in each equation, they are not the same as the value on the right side of the equation.
2(4) + 4(-2) = - 2
8 + -8 = -2
0 = -2 <---- this is not correct.
-4(4) + -2 = -14
-16 + -2 = -14
-18 = -14 <----- this is not correct.
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Answer:
8. A, B
9. C (2, 1)
Step-by-step explanation:
The length of the first piece is 4 the second piece is 8 and the third piece is 27. Your Welcome
1. y = 2/3x - 5
2. 4x - 6y = 30
Divide 2. by 2
3. 2x - 3y = 15
Substitute 1. into 3.
4. 2x - 3(2/3x - 5) = 15
5. 2x - 2x + 15 = 15
6. 15 = 15
False. There are an infinite number of solutions.
Answer:
30
Step-by-step explanation:
1. 0.75
2. 0.54
3. 0.1875
4. 0.25
5. 016
