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Yuki888 [10]
2 years ago
7

What is the average rate of change? A. 4B. 2/5C. 1D. 2​

Mathematics
1 answer:
nlexa [21]2 years ago
3 0

Answer:

C) 1

Step-by-step explanation:

The average rate of change remains constant among the 3 given points as \frac{5-4}{2-1}=1 and \frac{10-5}{7-2}=1, so your answer is C

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Answer:

∠BAD=20°20'

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Step-by-step explanation:

AB is tangent to the circle k(O), then AB⊥BO. If the measure of arc BD is 110°20', then central angle ∠BOD=110°20'.

Consider isosceles triangle BOD (BO=OD=radius of the circle). Angles adjacent to the base BD are equal, so ∠DBO=∠BDO. The sum of all triangle's angles is 180°, thus

∠BOD+∠BDO+∠DBO=180°

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So ∠ADB=34°90'

Angles BOD and BOA are supplementary (add up to 180°), so

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In right triangle ABO,

∠ABO+∠BOA+∠OAB=180°

90°+69°80'+∠OAB=180°

∠OAB=180°-90°-69°80'

∠OAB=20°20'

So, ∠BAD=20°20'

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Step-by-step explanation:

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