It is the 1 one because it is
comparing value
3x+2=-3x-2
6x=-4
x=-4/6Have solution.
y=-2x+10
y=-2x+10
both are equal <u>So</u><u> </u><u>no</u><u> </u><u>solution</u><u>.</u>
3rd
y=-x+4
y=-x+4
<u>both are equal So no </u><u>solution</u>
4th
3x+y=8
3x+y=9
both are equal <u>So no solution</u>
Answer:
Each project has 2.500 man-hours
Step-by-step explanation:
Available man hours: 5000
For two projects Costs $
X: project A 10
Y: project B 12
Approach:
X + Y = 5000 => X = 5000 - Y
10 * X + 12 * Y = 55000
replacing:
10 * (5000 - Y) + 12 * Y = 55000
50000 - 10 * Y + 12 * Y = 55000
2 * Y = 55000 - 50000
Y = 5000/2
Y = 2500
For X:
X = 5000 - 2500
X = 2500
The number of hours available for each project are:
Projects Man hours
X: project A 2500
Y: project B 2500
Answer:
x = 2.25 or any number greater
Step-by-step explanation:
5x3 > 4 + 8 + x
Make them equal to each other to get x
5x3 = 4 + 8 + x
(5x)(3) = 12 + x
- x - 3 - 3 - x
4x = 9
x = 2.25
Once you get x plug it in to get the truth of the expression