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2 years ago

A,B,C,D are points on the circumference of a circle centre o

Mathematics

1 answer:

Marina86 [1]2 years ago

7 0

The points A,B,C,D make up the circumference of the circle

The measure of angle BAD is 65 degrees

<h3>How to determine the measure of angle BAD?</h3>

The measure of angle ODB is given as:

ODB = 25 degrees

Considering the triangle BOD, we have:

ODB + BOD + DBO = 180

Where:

ODB = DBO = 25

So, we have:

25 + BOD + 25 = 180

Solve for BOD

BOD = 130 degrees

The angle at an arc is twice the angle at the circumference.

So, we have:

BOD = 2 * BAD

Substitute 130 for BOD

130 = 2 * BAD

Divide both sides by 2

65 = BAD

Hence, the measure of angle BAD is 65 degrees

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Answer:

D. $A\subset \mathbb{R}\times\mathbb{R}.$

Step-by-step explanation:

Consider the set

$A=\left\{(2,3),\ (5,1),\ (-3,-2),\ (0,3)\right\}$

This set consists of four ordered pairs.

The first numbers in these pairs are $2,\ 5,\ -3,\ 0.$ These numbers are integer numbers (not natural, because -3 is negative).

The second numbers in these pairs are $3,\ 1,\ -2,\ 3.$ These numbers are integer numbers too (not natural, because -2 is negative).

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$A\subset \mathbb{R}\times\mathbb{R}.$

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3 years ago

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elixir [45]

Answer:

<u>239 students and 153 non-students attended to the school production of "Our Town"</u>

Step-by-step explanation:

1. Let's review the information provided to us to answer the question correctly:

Number of tickets of the school production sold = 392

Student ticket cost = US$ 3

Non-students ticket cost = US$ 5

Total collected = US$ 1,482

2. How many students and how many non-students attended?

For answering the question we will use the following equation:

x = Number of students that attended the school production

392 - x = Number of non-students that attended the school production

3x + (392 - x) * 5 = 1,482

3x + 1,960 - 5x = 1,482

-2x = 1.482 - 1,960

-2x = - 478

x = -478/-2

<u>239 students and 153 non-students attended to the school production of "Our Town"</u>

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4 years ago

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ICE Princess25 [194]

Answer:

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Step-by-step explanation:

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3 years ago

Need some help with the question in the image

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Answer:

Let x be the first number

Y be the second number

given that x = 12 + y

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using the first equation,

12+y +y = 84

y = 36

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the two numbers are 36 and 48

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3 years ago

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Because a square is a rectangle,it must have.Because a square is a trapezoid,it must have.Because a square is a quadrilateral,it

Mama L [17]

Answer:

Because a square is a rectangle,it must have 4 right angles & 2 sets of parallel lines

Because a square is a trapezoid,it must have parallel lines ( 2 pairs)

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Step-by-step explanation:

Because i have a big brain :)

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