It actually looks like y= xsquared to me
Answer:9 and 10
Step-by-step explanation:
Yes, that's true PROVIDED your test scores are normally distributed.
If they are, then more than 99% of your test scores are within three
standard deviations of the mean.
You told us that 3-sigma = 5.4 . So less than one score out of every
hundred tests you take is lower than 86.6 or higher than 97.4 .
You are remarkably consistent, so I guess Jupiter must have been
in its ascendancy next door to the house of Andromeda about an
hour before you were born, or some such nonsense.
All quadratic equations have 2 roots; they can be 2 real, different ones, or 2 real, identical ones, or 2 imaginary ones or 2 complex ones. You can tell immediatey from the discriminant b^2-4a(c):
If the D is +, you'll have 2 real, unequal roots;
If 0, you'll have 2 real, equal roots;
If the D is -, you'll have 2 complex or imaginary roots, different
Here a=2, b= -3 and c =5, so the discrim. is (-3)^2 - 4(2)(5) = 9-40 = -36.
Because the discrim. is -, you'll have 2 complex roots.
Answer:
- x < -55
- x ≤ 3
- x > 1
Step-by-step explanation:
x/-5 + 17 > 4
-1/5x + 17 > 4
-1/5x > -13
x < -65
3x - 27 ≤ -18
3x ≤ 9
x ≤ 3
-6x - 1 < -7
-6x < -6
x > 1
Best of Luck!