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Dennis_Churaev [7]
3 years ago
14

Select the correct answer.

Mathematics
1 answer:
Anit [1.1K]3 years ago
4 0

Answer:

C. 21°

Step-by-step explanation:

In triangle ABC, perpendiculars dropped on the sides AB and AC from the ray BD are equal in measure or congruent.

Therefore, ray BD is equidistant from the sides AB and AC.

So, ray BD will be the bisector of angle ABC.

\therefore m\angle ABD = m\angle DBC

(Angle bisector theorem)

\therefore (3x+9)\degree = (45-6x)\degree

\therefore 3x+9 = 45-6x

\therefore 3x+6x = 45-9

\therefore 9x = 36

\therefore x =\frac{36}{9}

\therefore x =4

\therefore (3x+9)\degree = (3*4+9)\degree=(12+9)\degree =21\degree

\implies m\angle ABD=21\degree

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The <em><u>equation of a straight line</u></em> is an equation that comes in the form of an algebraic equation. It is also referred to as <u>Slope - Intercept form.</u> It can be represented using the equation below:

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The equation that shows how the price of a personal pizza y, depends on the number of toppings x  is y = 7 + x

This question can be solved and represented using the equation of a straight line.

Let's represent

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Therefore, the equation that shows how the price of a personal pizza y, depends on the number of toppings x  is written as:

y = $7 + $1 * x

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To learn more, visit the link below:

brainly.com/question/19662046

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2 years ago
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Answer:

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