12. If 'X' varies inversely as y+2 and x=8 when y=2.5, find 'x' when y=4
2 points
a) 2
b) 4
c) 6
d) 8
Answers
Answered by
3
6 and 8 is the right answer.
Answered by
0
Answer:
If y Varies Inversely As x and if y = 8 When x = 2.5, how do you find x when y = 2?
Algebra Inverse Variation Models
1 Answer
Alan N.
Nov 6, 2017
x
=
10
when
y
=
2
Explanation:
If
y
varies inversely as
x
Then
y
=
k
x
for some constant
k
Since
y
=
8
when
x
=
2.5
8
=
k
2.5
∴
k
=
8
×
2.5
=
20
We are asked to find
x
when
y
=
2
Hence,
2
=
20
x
→
x
=
20
2
x
=
10
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