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3 years ago

Please help how do you solve this?

Mathematics

2 answers:

damaskus [11]3 years ago

8 0

<h3>Answer: A) 120 degrees</h3>

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Explanation:

Triangle ABC is equilateral, so all three sides are the same length. This means the three angles are also the same measure. Call each interior angle x.

The three angles add to 180, so x+x+x = 180 solves to x = 60. Each interior angle is 60 degrees.

Angle DAC is an exterior angle of measure 180-x = 180-60 = 120 degrees

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Or another method you could use is the fact that all exterior angles of any polygon add to 360.

Since we have n = 3 sides, this means each exterior angle of an equilateral triangle is 360/n = 360/3 = 120 degrees

We consider this a regular polygon because all sides are the same length and all angles are the same measure. So the formula for the exterior angle measure 360/n would apply to any regular polygon and not just triangles.

GaryK [48]3 years ago

5 0

Answer:

A, 120 degrees

Step-by-step explanation:

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Out of the 150 students at a summer camp, 72 signed up for canoeing. there were 23 students who signed up for trekking, and 13 o

True [87]

Answer:

Approximately 45% students signed up for neither canoeing or trekking.

Step-by-step explanation:

First we subtract the number of the students who signed up from the number of the total students to find the number of the students who did not signed up for either.

But there are 13 students who signed up canoeing and also for trekking.

Hence the number of students they signed up for activity is

72 + 23 - 13 = 82

And the number of students they not signed up for any activity is

150 - 82 = 68

so 68 students signed up neither for trekking nor canoeing. The percentage of those students are :

$\frac{68}{150}$ × 100 = 45.3333%

Approximately 45% students signed up for neither canoeing or trekking.

8 0

3 years ago

I need this asap so if you can help that would be amazing . I can boost the points to more than 50 comment if you want more...

Lerok [7]

Multiply the number amount of cartridges by the number of books and add that tot he number of cartridges by the number of magazines.:

This needs to be either less than or equal tot he total cartridges she wants to use

40B + 30M ≤ 300

Do the same with pages:

200B + 80M ≤ 1200

6 0

4 years ago

Find x of this shape.

kondaur [170]

/_ ACY'=/_YAC=50°(ALTERNATE INTERIOR ANGLES)

4 0

4 years ago

Identify the Y intercept of the the equation 5x+8y =120

jolli1 [7]

Answer:

(0,15)

Step-by-step explanation:

The Y-intercept is when X=0, so plug in x=0 into the given equation. 5(0)+8y=120. Now solve for Y. 8y=120, y=15. So When x=0, y=15: this is the coordinate (0,15).

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3 years ago

a building has two sizes of Apartments small irregular the ratio of small apartments to regular Apartments is 14 to 6 what perce

Mazyrski [523]

Answer is in the file below

tinyurl.com/wpazsebu

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3 years ago