Answer:
Step-by-step explanation:
The discriminant comes from the quadratic formula. We use the discriminant to determine, before factoring, what types of solutions we can expect when we do factor. In the quadratic formula, the discriminant is under a square root sign. If the number under a square root sign is negative (meaning the discriminant is negative), we will not have real number solutions because you can't have a negative number under a square root. So a is your choice.
Answer:
x= - 1364/7
Step-by-step explanation:
22/ 21
x=−186
21x = -186 x 22
=4092/21 =-1364/21
Answer:
15 to the 3rd power and false
Step-by-step explanation:
Answer:
ana spends 2 hours 50 minutes working
Step-by-step explanation:
ana starts working at 2:40 pm and finishes work at 5:30 pm.
Let's bear in mind that there is 60 minutes in one hour.
Ana started 2.40 , the :40 means 40 minutes
While I 5:30, the :30 means 30minutes
The amount of time spent by anna at the working place.
5:30-2:40= 4 hours minus 2 hours, 90 minutes- 40 minutes
= 2 hours 50minutes
ana spend 2 hours 50 minutes working
