A diver descends at a steady rate of 2.54 meters every hour. Yesterday, he dove to a depth of 18 meters. Which expression can you use to find how many hours he dove? –2.54 ÷ 18 18 ÷ 2.54 –18 ÷ –2.54 2.54(18)

–18 ÷ –2.54

Step-by-step explanation:

i got the question rihgt

Yo need to use discriminant
for ax²+bx+c=0the discriminat is b²-4ac
if the discriminant is1. less than 0, then 0 real solutions2. equal to 0, then 1 real solutions3. if more than 0, then 2 real solutions
given
6x²-2x+7=0a=6b=-2c=7(-2)²-4(6)(7)4-168we can see this is less than 0no real solutions