Answer:
y = 10
Step-by-step explanation:
Given y varies inversely as x then the equation relating them is
y = 
← k is the constant of variation
To find k use the condition x = 4 when y = 15 , then
15 = 
( multiply both sides by 4 )
60 = k
y = 
← equation of variation
When x = 6 , then
y = 
= 10
60 beats per minute is the answer
The answer will be 8.555555555555555556 (it's a repeating decimal)
Four options are given for this question, which are: 15/8, 49/64, 56/8 and 21/24.
7/8 = 0.875
15/8 = 1.875
49/64 = 0.7656
56/8 = 7
21/24 = 0.875.
The fraction that has a value that corresponds with that of 7/8 is 21/24, therefore, 21/24 is the correct option.
