1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
pav-90 [236]
3 years ago
7

What is the perimeter of △ABC? Round each step to the nearest tenth.

Mathematics
1 answer:
trapecia [35]3 years ago
5 0
Required Perimeter = AB + BC + CA
AB = sqrt((5 - (-1))^2 + (-1 - 1)^2) = sqrt(6^2 + (-2)^2) = sqrt(36 + 4) = sqrt(40) = 6.3
BC = sqrt((-1 - 0)^2 + (1 - (-3))^2) = sqrt((-1)^2 + 4^2) = sqrt(1 + 16) = sqrt(17) = 4.1
CA = sqrt((0 - 5)^2 + (-3 - (-1))^2) = sqrt((-5)^2 + (-2)^2) = sqrt(25 + 4) = sqrt(29) = 5.4

Perimeter = 6.3 + 4.1 + 5.4 = 15.8 units
You might be interested in
Evaluate $\frac{20}{101}-\frac{20}{99}$. Express your answer in simplest form.
m_a_m_a [10]
Detail: 37









Answer: 69


Gummi


Blick: 55
7 0
2 years ago
Which ordered pairs are solutions to the inequality 2x - y > -4? Check all that apply.
JulsSmile [24]

Answer:

(1,-6)

(-2,-5)

(8,2)

(4,0)

4 0
3 years ago
Sabrina read a total of 175 pages in 3 days. On the first day she read 45 pages. On the second and third days, she read the same
Artemon [7]

Answer: Sabrina read 65 pages on the second and third days

Step-by-step explanation:

45 + 2x = 175

45 - 45 + 2x = 175 -45

2x = 130

2x/2  = 130/2

x = 65

CHECK: 45 + 65 +65 = 175

7 0
3 years ago
Read 2 more answers
Determine the average speed of the current in a river if a boat moves at 20 miles/hour in still water and takes 3 hours to trave
Taya2010 [7]

The speed of the current in a river is 6 miles per hour

<em><u>Solution:</u></em>

Given that,

Speed of boat in still water = 20 miles per hour

Time taken = 3 hours

Distance downstream = 78 miles

To find: Speed of current

<em><u>If the speed of a boat in still water is u km/hr and the speed of the stream is v km/hr, then:  </u></em>

Speed downstream = (u + v) km/hr

Speed upstream = (u - v) km/hr

<em><u>Therefore, speed downstream is given as:</u></em>

\text{ speed downstream } = \frac{distance}{time} = \frac{78}{3}\\\\\text{ speed downstream } = 26 \text{ miles per hour }

We know that,

Speed downstream = (u + v)

26 = 20 + v

v = 26 - 20

v = 6 miles per hour

Thus speed of the current in a river is 6 miles per hour

3 0
3 years ago
Find each trig ratio
Elena L [17]

Answer:

Step-by-step explanation:

7 0
3 years ago
Other questions:
  • At a local high school, the student population is growing at 12% a year. If the original population was 242 students, how long w
    10·1 answer
  • » What is the volume of the prism?
    9·1 answer
  • Calculate the area and perimeter of the given shape with radius 14 cm.
    7·1 answer
  • How many terms in <br> (3x^2-4x+2)-(2x^2-4x-5)
    12·1 answer
  • nick has 24 blue marbles and 36 green marbles. He wants to place them into bags. He wants an equal amount of each colored marble
    11·1 answer
  • PLEASE HELP!!!!!
    5·1 answer
  • Sam bought 6 pens for an unknown price plus a
    8·1 answer
  • I need help with 3-5x56=?
    12·2 answers
  • 4/5 x 20 as a whole number
    14·1 answer
  • PLS HELP IF POSSIBLE ASAP
    13·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!