Add them to eliminate x terms
x+3y=-7
<u>-x-7y=19 +</u>
0x-4y=12
-4y=12
divide by -4
y=-3
sub back
x+3y=-7
x+3(-3)=-7
x-9=-7
x=2
(x,y)
(2,-3)
<h3>
Answer: B. 2/3(x+6)</h3>
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Explanation:
If you distribute the expression in choice A, then you'd get
(1/3)(2x+6) = (1/3)*2x + (1/3)*6 = (2/3)x+2
which is not the original expression. So we can rule out choice A.
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A similar story happens with choice C
(2/3)(x+12) = (2/3)x+(2/3)*12 = (2/3)x+8
and also with choice D
(2/3)(x+4) = (2/3)x+(2/3)*4 = (2/3)x + 8/3
allowing us to rule out choices C and D
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Choice B works
(2/3)(x+6) = (2/3)x+(2/3)*6 = (2/3)x+4
Answer:
see below
Step-by-step explanation: 5 20 15 28
3x + y = 23
3x – 2y = 8
O I should add, and the Xs will be eliminated. 3x + 3x = 6x NOT eliminated
O I should add, and the Ys will be eliminated. y + -2y = -y NOT eliminated
O I should subtract, and the Xs will be eliminated. 3x - 3x = 0x X is eliminated
O I should subtract, and the Ys will be eliminated. y - -2y = y NOT eliminated
THIS IS NOT THE ORDER -2.07, -2.007, -27/10, -2.77
-27/10=-2.7
so the order is -2.77,-2.7, -2.07, -2.007
because .77 is more then .70
or the order is -2.77, -27/10, -2.07, -2.007
Answer:
Exact form:
Decimal Form:
7.280109889280518
Step-by-step explanation:
Use the distance formula to determine the distance between 2 points.
Distance =
≈ 7.280109889280518