2x+9 is the awnser because you are multiplying 2 and X then adding 9
Answer:
22
Step-by-step explanation:
Answer:
x = 3/4 and x = -4/5
Step-by-step explanation:
20x⁴ + x³ + 8x² + x − 12
Group:
(20x⁴ + 8x² − 12) + (x³ + x)
Factor:
4 (5x⁴ + 2x² − 3) + x (x² + 1)
4 (5x² − 3) (x² + 1) + x (x² + 1)
(x² + 1) (4 (5x² − 3) + x)
(x² + 1) (20x² + x − 12)
(x² + 1) (4x − 3) (5x + 4)
So the rational roots are x = 3/4 and x = -4/5.
Answer:
1a. Parallel
1b. Parallel
1c. Perpendicular
Step-by-step explanation:
Parallel lines never intersect. This means they have the same slope. Their equations will have the same value for slope in y=mx+b.
Perpendicular lines intersect at 90 degrees. Their slopes are negative reciprocals of each other. If the slope in y=2x+1 is m=2. Then the perpendicular line will be -1/2.
To determine if the lines are perpendicular or parallel, convert each equation to y=mx+b form.
1a. y=5/2 x -3
5x=2y - 4 becomes y=5/2x +2 Parallel
1b. 2x+8y=-24 becomes y=-1/4 x-3
48y=-12x-144 becomes y= -1/4 x-3 Parallel
1c. 2x-7y=-56 becomes y=2/7 x + 8
7x+2y=8 becomes y= -7/2 x + 4 Perpendicular
