what ratio forms a proportion?
a.3/15,12/55
b.8/24,12/34
c.5/18,25/90
d.4/11,16/25
1. Which ratios form a proportion?
Answer: C. 5/18 25/90
2. Which ratios form a proportion with 9/15?
Answer: A. 6/10
3. A textbook weighs 2.5 pounds. How many kilograms does the textbook weigh? Round your answer to the nearest tenth of a pound. 1kg=2.2lb
Answer: A. 1.1kg
4. Slove the proportion using number sense. 2/8=x/48
Answer: B. 12
5. Solve for proportion using cross products. 18/20=k/110
Answer: A. 99
find a ratio between the two fractions, when there is a common ratio between the fractions, that is when there is a proportion.
for example, if you have 2/3 and 7/8, you could either make both fractions into decimals... so .667 and .875
(which are not the same number, so they are not a proportion)
or
you could do 7 divided by 2 over 8 divided by 3, which if it was a proportion should equal 1...
3.5/2.667 does not equal 1, so it is not a proportion
both ways are correct, it is just whichever you find easier.
3/15 and 12/55 12 divided by 3 is 4 and 55divided by 15 is 3.7 so its not a proportion
is it c
as a dumb person on here he is indeed correct
To determine if a ratio forms a proportion, we need to check if the two ratios are equivalent. In other words, we need to compare if the two fractions have the same value.
Let's check each option to see if the ratios form a proportion:
a. Option A: 3/15 is equal to 1/5, and 12/55 cannot be simplified further. So, these two ratios are not equivalent.
b. Option B: 8/24 can be simplified to 1/3, and 12/34 cannot be simplified further. Therefore, these two ratios are not equivalent.
c. Option C: 5/18 and 25/90 can both be simplified to 5/18. Hence, these two ratios are equivalent and form a proportion.
d. Option D: 4/11 cannot be simplified any further, and 16/25 cannot be simplified further either. As a result, these two ratios are not equivalent.
So, the correct answer is option C (5/18, 25/90) as the ratios 5/18 and 25/90 are equivalent and form a proportion.