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Alex73 [517]
4 years ago
9

How to find the interior angle of a triangle?

Mathematics
1 answer:
Pani-rosa [81]4 years ago
3 0
All 3 interior angles of any triangle equal180
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Gerry thinks that the points (4,2) and (−1,4) form a line perpendicular to a line with slope 4. Do you agree? Why
faust18 [17]

Answer:

The answer to your question is these lines are not perpendicular.

Step-by-step explanation:

Data

A (4, 2)

B (-1, 4)

slope = m = 4

Perpendicular lines mean that these lines cross and form an angle of 90°. Also, the slope of perpendicular lines is negative reciprocals.

Process

1.- Find the slope of the second line and compare it to the slope given.

slope = \frac{y2 - y1}{x2 - x1}

Substitution

slope = \frac{4 - 2}{-1 - 4}

Simplification and result

slope = \frac{-2}{5}

-2/5 is not a negative reciprocal of 4, so these lines are not perpendicular.

4 0
4 years ago
Two patrol boats leave Cape May at the same time, the same speed, but on different bearings. One has bearing 41°45
VMariaS [17]

Based on the information given, the computation shows that the distance between them is 2.47 miles.

<h3>Solving the distance.</h3>

Since one has bearing 41°45', this will be: = 41° + (45/60) = 41° + 0.75 = 41.75°.

The other has bearing 59°13'. This will be:

= 59° + (13/60) = 59° + 0.22 = 59.22°.

The difference of the angles will be:

= 59.22° - 41.75°

= 17.47°

Let the distance between them be represented by c. Therefore, we'll use cosine law to solve the question. This will be:

c² = a² + b² - 2ab cos 17.47°

c² = 20² + 20² - (2 × 20 × 20 × 0.19)

c² = 6.07459

c = 2.47

Learn more about distance on:

brainly.com/question/2854969

8 0
2 years ago
How do you write $447.66 in a sentence?
Sav [38]
Four hundred forty-seven dollars and sixty-six cents

hope this helps
4 0
4 years ago
Read 2 more answers
What is 4x - 1 = 3x + 10 ?
AfilCa [17]

Answer:

x=11

Step-by-step explanation:

first add 1 to both sides and the -1 will cancel out. Your left with 4x=3x+11.

Then subtract 3x from both sides and you will be left with. x=11

7 0
3 years ago
Read 2 more answers
5x – 10 + 3x + 4 = 3(2x – 5) + 2x solve for x
Monica [59]
X = - 31/5 or X = -6.2
4 0
3 years ago
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