I'll give brainliest y is inversely proportional to
When x = 4, y = 5.
Find x if y = 10

formula = y= k/x

k = y/x

y= 5 , x= 2

k = 5/2

part a

y = 2/5 × 8    =   3.2

part b

y =  × x

part c

x = k/y

x =  × 10   = 4

Step-by-step explanation:

7! = 7×6×5×4×3×2

3! = 3× 2

as 7! is multiple of 3! because 7! contains 3! that is 3× 2 as factor

so 7! /(3! ) = 7× 6× 5× 4

= 42 × 20

= 840

its b) 840✌✌✌

dhruv⭐

answer: what in the world is this

step-by-step explanation: