Arithmetic. The common difference is 6 and the blanks are -15 and -3.
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Solve the second equation for y
x+2y = -8
x+2y-x = -8-x
2y = -x-8
2y/2 = -x/2 -8/2
y = (-1/2)x - 4
The slope here is -1/2, which is the same slope as the first equation. Because of this fact and the fact that the y intercept is not the same, we have two parallel lines. The parallel lines never cross.
There are no solutions
The positive number but a negative result would be :
C. Irene is scuba diving at –30 feet. She swims 10 feet toward the surface to watch a school of fish.
The positive value is she swam 10 feet up to the surface, but she is still below the surface, which would be a negative result.
80%
THis is because you are supposed to multiply 20 to the denomintaor and numerator.
4 times 20=80
~JZ
Hope it helps
