True or false? tell whether the pair of ratios form a proportion. 49/21 and 28/12 explain why you chose what you chose. need answered asap: -)

True, they form a proportion because their cross-multiplication products are equal.

Step-by-step explanation:

True or False?

If they are a proportion, the products you get from cross-multiplying are the same.

Multiply the left numerator by right denominator:

49 X 12 = 588

Multiply the left denominator by right numerator:

21 X 28 = 588

588 = 588

Therefore it is true, 49/21 and 28/12 form a proportion.

{3 + i, 3 - i, 3, -1}

step-by-step explanation:

the answer is 13 cm