4x-x-7x just combine all like terms 4x-x=3x rewrite 3x-7x= -4x. 4x-x-7x=-4x
Hope this helps have a nice day
Answer:
k<3.5 or k>3.5
Step-by-step explanation:
k²-7k+12.25>0
(k-3.5)²
k²-7k+12.25
k²-2k·3.5+(√12.25)²
(k-3.5)²
k-3.5<0 or k-3.5>0
k-3.5 or k-3.5
Answer:
-3/2
Step-by-step explanation:
Perpendicular lines have negative reciprocal slopes. That means that it's the reciprocal, but with the opposite sign. The slope of a line perpendicular to a line with slope 2/3 would be -3/2. Here's how to figure it out:
Start with the slope: 2/3
Flip the fraction to find the reciprocal : 3/2
The sign has to be changed! So the negative reciprocal is -3/2.