1/5...
This question should be relatively easy for a high schooler...
Answer: 2014
Step-by-step explanation:
LED: -25x + 6y = 20
CFL: 15x + 2y = 322
we need to find which year it was the same to know where LED lighting surpassed CFL lighting
-25x + 6y = 20
15x + 2y = 322 (-3)
-25x + 6y = 20
<u>-45x - 6y = -966 </u>
-70x = -946
x = 13.51
The nearest year would be 14 which is 2014
Answer:
b
Step-by-step explanation:
vertical line through x at one
vertical lines have undefined slopes
can take two points to verify (1,1) (1,2) m=<u> 2-1</u>
1-1
<u> 1 </u>
0 undefined zero in denominator
Its (x+1−√<span><span><span><span>5</span><span></span></span>ı)(x+1+<span>√<span><span>5</span><span></span></span></span>ı)</span><span>
</span></span>
