b.6
c.3
d.16
2x+5y=4 and 7x+y=-19
Answer:
The value of x is 12.
Step-by-step explanation:
Given that x is directly proportional to y so the expression will be x=k(³√y)where k is the constant. First, you have to find the value of k :
Next, you have to find the value of x, by substituting y = 64 into the expression :