R is inversely proportional to A. R = 12 when A= 1.5
a) Work out the value of R when A = 5.
b) Work out the value of A when R = 9

R = 40

A= 1.125

Step-by-step explanation:

12(R) ÷1.5(A) =8

1.5(A) x 8 = 12(R)

1.5(A) x 8 = 12(R) 12(R) ÷ 8 = 1.5 (A)

for 1.5 = 12, you need to times 8

A = 5 and you want to get to R so you times by 8

5 x 8 = 40 | R = 40

R = 9

9 ÷ 8 = 1.125

A = 1.125

sine

step-by-step explanation:

54 kilometers per hour

step-by-step explanation:

according to rules:

1 km = 1000 meter

which means that 1 meter = 1/1000 km

1 hour = 3600 second [ as 1 hour = 60 min = 60 *60 seconds ]

which means that 1 second = 1/3600 hour

therefore, 1 kilometer/hour =

thus to convert 15 meter per second to kilometer per hour, we multiply 15 to 3.6 kilometer/hour.

15 meter/second=   which is the required answer.