What is a ratio?

1 answer:

8 0

A ratio is a numerical comparison between 2 similar objects, persons, figures, or ideas. For example if I have 5 cards and you have 10, I can say that you have twice as many cards as I do. Or take my 5 cards and multiply by 2 to get your 10. Another way I can say it is that the ratio between your cards to my cards is 2 to 1 or 2:1 (both mean the same thing). Let's say now I have x cards, but knowing that I have a 2:1 ratio from your cards to mine, I can say that you have 2x cards. There is alot more I can say, but this should get you started. Feel free to ask any following questions.

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In the diagram of circle O, what is the measure of ? 27° 54° 108° 120°

vesna_86 [32]

Answer:

Option (2).

Step-by-step explanation:

This question is incomplete; here is the complete question and find the figure attached.

In the diagram of a circle O, what is the measure of ∠ABC?

27°

54°

108°

120°

m(minor arc $\widehat {AC}$ ) = 126°

m(major arc $\widehat {AC}$ ) = 234°

By the intersecting tangents theorem,

If the two tangents of a circle intersect each other outside the circle, measure of angle formed between them is half the difference of the measures of the intercepted arcs.

m∠ABC = $\frac{1}{2}[m(\text {major arc{AC})}-m(\text{minor arc} {AC})]$