which two ratios form a proportion?
a) 1 : 2 and 4 : 2
b) 1 : 2 and 6 : 3
c) 2 : 1 and 2 : 4
d) 2 : 1 and 6 : 3

The answer is D)

Step-by-step explanation:

To determine whether the two ratios form a proportion, write the ratios as fractions and compare using a common denominator.

2 /1  =  6 /3  →  2 · 3 /1 · 3  =  6 /3  →  6 /3  =  6 /3

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⭐

according to this law, when unemployment goes up by 1%, gdp drops by 2%. in the question, unemployment rate goes from 2% to 5%, meaning unemployment goes up by 3%, so the gdp drops by 6%. thus the effect is a drop in gdp by 6%.

step-by-step explanation: