Answer:
Option D
Step-by-step explanation:
correct answer on edge :)
Answer:
The answer is 4/1
Step by step
So x=-3 y=4 and z=5 so i added - 3 +6 to get positive 3 and z - y to get postive 1. X +y gives you positive 1 also so if u join both you get an improper fraction 4/1
<span>Z $ xy then Z = Kxy. When x = 2 and y = 3, and Z = 60, our constant of variation becomes
60 = K * 2 * 3
K = 10. Our constant of proportionality equals 10. We would need that in the second part of the equation.
When x = 4 and y = 9, we have
Z = 10 * 4 * 9 = 360</span>
(2z+43)=(-10z+25)
-2z -2z
43=-12z+25
-25 -25
18=-12z
z=-1.5
So Z=3/2
X^2 + x < 20
x^2 + x - 20 <0
set the left side equal 0
(x+5)(x-4) = 0
x + 5 = 0; x = -5
x - 4 = 0 ; x = 4
so solutions:
x has to be between -4 and 5 means
-5 < x < 4
