If y is directly proportional to 1/x and x=2 when y =20,what is the value of x when y=1.25?
Answers
Answered by
8
Answer:
y is directly proportional to 1/x
xy=k (where k is constant)
so,
for x=2 and y=20
k=xy
k=2×20
k=40-(1)
now,
for y=1.25
k=xy
k=x×1.25
k=1.25x-(2)
from equation (1) & (2)
40=1.25x
40/1.25=x
x=32
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Answered by
2
Answer:
Y is directly proportional to 1/x xy=k ( where k is constant) so, for x=2 and y=20 k=xy k=2×20 k=40-(1) now, for y=1.25 k=xy k=x×1.25 k=1.25x-(2)
Step-by-step explanation:
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