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Vadim26 [7]
1 year ago
11

Find the perimeter of the triangle whose vertices are (−7,−1), (5,−1), and (5,4). Write the exact answer. Do not round.

Mathematics
1 answer:
Ipatiy [6.2K]1 year ago
7 0

The perimeter of the triangle is 30 units

<h3>How to determine the perimeter?</h3>

The vertices are (−7,−1), (5,−1), and (5,4).

Start by calculating the distance between the vertices using:

d = \sqrt{(x_2 -x_1)^2 + (y_2 -y_1)^2

So, we have:

d1 = \sqrt{(-1 + 1)^2 + (5 + 7)^2

d1 = 12

d2 = \sqrt{(-1 - 4)^2 + (5 - 5)^2

d2 =5

d3 = \sqrt{(-1 - 4)^2 + (-7 - 5)^2

d3 = 13

The perimeter is then calculated as:

P = d1 + d2 + d3

This gives

P = 12 + 5 + 13

Evaluate

P = 30

Hence, the perimeter of the triangle is 30 units

Read more about perimeter at:

brainly.com/question/6465134

#SPJ1

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USPshnik [31]

Answer:

C. 3x + 5  = 2x -6

Step-by-step explanation:

8 0
3 years ago
3/7 of the people living in the apartment building are men. 5/8 of the remaining are women. The rest are children. A total of 27
Vladimir [108]
People in building ---- x (men, women and children)
children --- y
men + women + children = x
(3/7)x + (5/8)(4/7)x + y = x
3x/7 + 5x/14 + y = x
times 14
6x + 5x + 14y = 14x
14y = 3x

y + 220 =x
sub into the other one
14y = 3(y+220)
11y = 660
y = 60
then 14(60) = 3x ---> x = 280

So we have 280 people in the building.

check: 3/7 of 280 are men = 120
leaving 160 women and children
5/8 of these ot 100 are women

so we have 120 men, 100 women and 60 children!

hope this is right! have a great. day
7 0
3 years ago
The sum of the measures of two exterior angles of a triangle is 252. What is the measure of the third exterior angle?
alisha [4.7K]
108 is your answer to this question
3 0
3 years ago
PLEASE HELP HELP !!!!!!!
german

Answer: The answer is –3x+10=5x–8.

Step-by-step explanation:

5 0
3 years ago
120-2x=30, what’s x?
KiRa [710]

Step-by-step explanation:

-2x=30-120

-2x = -90

=x = -90/-2

=x = +45

4 0
3 years ago
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