As you may know, the axis of symmetry will be a coordinate off the vertex of the equation, so...
Answer:
3
Step-by-step explanation:
2x+x+2+x+2+4x+1 = 4x+3x+2+2x
2x+x+x+4x + 2+2+1 = 4x+3x+2x+2
8x+ 5 = 9x + 2
5-2=9x-8x
x= 3
I hope im right!!
Answer:
1=true
2=false
3=false
4=true
5=true
6=false
Step-by-step explanation:
hope this helps!:)
Mean = Sum of all the observations/ Number of observations = (87+46+90+78+89)/5 = 78
Variance = SD^2 ------ SD = Standard deviation
It means that with Variance, square root is never taken.
Therefore,
Variance = Summation of square of differences between observation and the mean divided by the number of observations.
That is,
Variance = {(87-78)^2 + (46-78)^2 + (90-78)^2 + (78-78)^2 + (89-78)^2}/5 = 274