Answer:
x=3
Step-by-step explanation:
2x^2= 18
divide the two by 18 —- x^2=9
now x *x= 9 or the square root of 9
Speed = dis / time
let plane speed in still air is X and air speed Y
so, X-Y = 2280/4 = 570 km/h
and X+Y = 6650/7 = 950 km/h
so, X = (570 + 950) / 2 = 760 km/h
and Y = 950- 760 = 190 km/h
:)
Number 2 is correct. For number 3, the mean is 9 and the mean absolute deviation is 1.33.
Question 1: C, x < -8 <---
Question 2: A, n>= -4
