Question

y varies inversely with x. If y = 30 when x = 12, find
(1)y when x = 15
(2) x when y = 18​

Answer 1

Answer:

solved

Step-by-step explanation:

yx = k

K = 360

yx  = 360

1) y = 360/15 = 24

2) x = 360/18 = 20

Answer 2

Answer:

1)x1÷x2=y2÷y1

12÷15=y2÷30

4÷5×30=y2

4×6=y2

y2=24

2)x1÷x2=y2÷y1

12÷x2=18÷30

x2=3÷5×12

x2=7.2