Two ratios form a proportion if the ratios reduce to the same fraction which two ratios below form a proportion

15/12 15/9 25/10 35/21

15/9 and 35/21

if you use your calculator you can figure out they're the same ratio which iss 5/3rds

15/9 and 35/21 they both reduce 5/3

Step-by-step explanation:

13875138answer:

step-by-step explanation:

use a calculator!

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⭐