12x^3 +2x^2-30x = 8
2x( 6x^2 +x -15) = 8
so 2x= 8, x=4
(2x) ( 2x-3) ( 3x+5) = 8
2x-3 = 8
2x= 11
x= 5.5
3x+5=8
3x= 3
x=1
Answer:
4 workers
Step-by-step explanation:
20 ft x 30 ft = 600 sq ft per worker per hour x 8 hours = 4800 sq ft per worker
18,400 sq ft divided by 4800 = 3.83 so 4 workers
No becaue that is a piont not an ineqality
Answer:
x + 2y - 5 = 0
Step-by-step explanation:
We can see that , the graph passes through (0,2.5) and (5,0) . Therefore the ,
- x intercept is 5
- y intercept is 2.5
We can use the intercept form of equation as ,
=> x/a + y/b = 1
=> x/5 + y/2.5 = 1
=> x + 2y/5 = 1
=> x + 2y = 5
=> x + 2y -5 = 0 .
This equation can be verified by plotting the graph .[ Refer to attachment ]
<h3><u>Hence </u><u>the</u><u> </u><u>equation</u><u> of</u><u> </u><u>the</u><u> line</u><u> is</u><u> </u><u>x </u><u>+</u><u> </u><u>2</u><u>y</u><u> </u><u>-</u><u> </u><u>5</u><u> </u><u>=</u><u> </u><u>0</u><u> </u><u>.</u></h3>
Bottom left is the answer