Answer:
7(1/2)
Step-by-step explanation:
The correct answer is that the variability is 2.0 times as large.
In the first set, the MAD is 1.2.
In the second set, the MAD is 0.6.
Dividing 1.2 by 0.6 gives us a factor of 2.
2x² + 3x - 5 = 0
a=2, b=3, c=-5
D = b² - 4ac = 3² - 4*2*(-5) = 9 + 40 = 49
Here you have 2 linear equations and are to solve this system. Both equations have already been solved for y, so you can set one of them = to the other one:
-2x+11 = -3x+21.
Then 3x-2x = 21 - 11, or x = 10 (answer)
Find y by subst. x = 10 into either of the given equations.
Solution is then (10, ? )