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vredina [299]
3 years ago
13

sharon is making greeting cards, each card takes her twenty minutes to make. how many can she complete in two and a half hours?

Mathematics
1 answer:
olga2289 [7]3 years ago
4 0
7 or 8 since 2 and a half hours isnt an even amount of time so thered be an extra 10 minutes
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Circle experts...help! will give brainly to most detailed answer
azamat
<h3>Answer:  161 degrees</h3>

=========================================================

Explanation:

Line AE is a tangent while line AU is a secant. The angle formed by the secant and tangent lines connects with the arcs through this formula

secant tangent angle = (larger arc - smaller arc)/2

More specifically, we can say:

angle EAI = (arc EU - arc IE)/2

42 = ( (7m+5) - (3m-1) )/2

42*2 = (7m+5) - (3m-1)

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m = 78/4

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m = 19.5

Use this value of m to compute each arc

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  • arc EU = 7m+5 = 7*19.5+5 = 141.5 degrees

Let's say arc IU is some unknown number x. It must add to the other two arc measures to form 360 degrees, which is a full circle.

(arc IU) + (arc IE) + (arc EU) = 360

x + 57.5 + 141.5 = 360

x + 199 = 360

x = 360-199

x = 161

The measure of minor arc IU is 161 degrees

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I think it should be 6000 more! If not im so sorry!! Have a nice day!!

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