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Anastaziya [24]
3 years ago
12

Select ALL the correct answers,

Mathematics
1 answer:
Vaselesa [24]3 years ago
8 0
<h2><u>Answer</u><u> </u><u>:</u></h2>

Option (2) and Option (3) is the correct answer .

<u>Requ</u><u>ired</u><u> </u><u>Ex</u><u>plaination</u><u> </u><u>:</u>

Scenario 2 : The height of a stone shot by a catapult reaches a maximum height and then falls on the ground.

  • The graph of this scenario is a downward parabola. Therefore option 2 is correct.

Scenario 3 : The sale of product increases at first and then decreases.

  • The graph of this scenario is a downward parabola. Therefore option 3 is correct.

<u>Therefore, the correct options are </u><u>2</u><u> </u><u>and</u><u> </u><u>3</u><u>.</u>

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What is the measure of minor arc BD?
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Answer:

minor\ arc\ BD=100^o

Step-by-step explanation:

The picture of the question in the attached figure

we know that

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so

In this problem

BC and CD are tangents to the circle

BC=CD ----> by the Two Tangent Theorem

That means

Triangle ABC and Triangle ADC are congruent

so

m\angle BAC=m\angle DAC

Find the measure of angle BAC

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m\angle BAC+m\angle BCA=90^o

substitute given value

m\angle BAC+40^o=90^o

m\angle BAC=90^o-40^o=50^o

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m\angle BAD=2(50^o)=100^o

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we know that

minor\ arc\ BD=m\angle BAD -----> by central angle

therefore

minor\ arc\ BD=100^o

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