Answer:
2
Step-by-step explanation:
Answer:
2%
Step-by-step explanation:
28/140=0.2
Answer:
d
Step-by-step explanation:
Given y is directly proportional to x² then the equation relating them is
y = kx² ← k is the constant of proportion
To find k use the condition y = when x = , then
= k( )² = k ( multiply both sides by 8 )
1 = 2k ( divide both sides by 2 )
k =
y = x² ← equation of proportion
When y = , then
= x² ( multiply both sides by 2 )
9 = x² ( take the square root of both sides )
x = ± = ± 3
with positive value x = 3 → d
Yeah I think x=12y on this one correct me if I’m wrong