Answer:
the answer is d because 0.978 cool number like yaaaa.
Step-by-step explanation:
The mean is the average of a set of numbers (adding the numbers and divide by the number of numbers),
if you add 200 to that set the mean will increase ,
the median will stay the same, as there isn't another number added to the set
choice A
Answer:
2 real roots
Step-by-step explanation:
The discriminant is b^2 -4ac where ax^2 +bx -c
If b^2 -4ac > 0 we have 2 real roots
b^2 -4ac = 0 we have 1 real root
b^2 -4ac < 0 we have 2 complex roots
x²-x-12=0
a =1 b=-1 c = -12
(-1)^2 - 4(1)*(-12)
1 +48
49 > 0
2 real roots
