You know the formula of discriminant
a b
c d
that means ad-bc
So <span>we have an equation
(-12)x3-(2f)x(-w</span>²)= 2k x 3- (-14)x(-81)
0r -36 +2fw²= 6k- 1134
And 2fw²-6k+ 1098=0
But I did not know what is variable here?
Answer:
2.5 hours
Step-by-step explanation:
it takes him 2.5 hours
<span>For this we have to see which numbers below 200 are both divisible by 8 and 12.
Who get free drink - 8,16,24,32,40,48,56,64,72,80,88,96,104,112,120,128,136,144,152,160,168,176,184,192,200
Who get free sandwich
12,24,36,48,60,72,84,96,108,120,132,144,156,168,180,192
Find common numbers
24,48,72,96,120,144,168,192
The answer is 8</span>