I would go with the second one
Y varies inversely with x.
⇒ y = k/x
When y = 5, x = 50
5 = k/50
k = 50 x 5 = 250
Equation: y = 250/x
When x = 10
y = 250/10 = 25
Answer: k = 250, y = 25 when x = 10
Answer:
2.5.
Step-by-step explanation:
Given equation:
(4 * 5) / 8
Multiply:
4 * 5 = 20.
Divide:
20 / 8 = 2.5
Answer:
The answer would be A)98.
I got this by taking the 3 test scores that were provided and adding them then subtracting that by 360 (90x4 - which would give you a 90 in the end) so I had 360 - 262 which equaled 98 and that would be the score needed to have a 90 in the end.
Y varies inversely with x
means that y=k/x
with x=0.7 and y=80
we have 80=k/0.7
k=0.7x80=56
so the equation is
y=56/x
