which 1 of the following is a true proprotion A. 7:9=8:9 B.2:1=1:2 C.54:9=6:3 od D.3:4=9:12 please answer
Take your answer choices one at a time.
7/9 of course cannot equal 8/9
2/1 is not 1/2
Of the last two choices, which do you think is a true proportion?
1-3-5-6
To determine which of the given proportions is true, we can simplify each ratio and check if they are equal.
Let's simplify each ratio:
A. 7:9 = 8:9
The simplified form of 7:9 is 7/3:9/3, which is not equal to 8/3:9/3. Therefore, A is not a true proportion.
B. 2:1 = 1:2
The simplified form of 2:1 is 2:1, which is equal to 1:2. Therefore, B is a true proportion.
C. 54:9 = 6:3
The simplified form of 54:9 is 6:1, which is not equal to 6:3. Therefore, C is not a true proportion.
D. 3:4 = 9:12
The simplified form of 3:4 is 3/3:4/3, which is equal to 9/3:12/3. Therefore, D is a true proportion.
So, the true proportion among the options is B.