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
yarga [219]
3 years ago
7

I need someone to help me do this, see attached documents for the questions

Mathematics
1 answer:
Brilliant_brown [7]3 years ago
4 0

Answer:

<u><em>1.) 20.2</em></u>

Step-by-step explanation:

1.) You need to use the distance formula:

d=\sqrt{(x_{2}-x_{1})^2+(y_{2}-y_{1})^2}

Find the distance of A to B first:

(-2,2)(3,2)\\\\\sqrt{(3+2)^2+(2-2)^2}\\\\\sqrt{(5)^2+(0)^2}\\\\\sqrt{25} =5

B to C:

(3,2)(-1,-5)\\\\\sqrt{(-1-3)^2+(-5-2)^2}\\\\\sqrt{(-4)^2+(-7)^2}\\\\\sqrt{16+49}\\\\\sqrt{65} =8.06=8.1

C to A:

(-1,-5)(-2,2)\\\\\sqrt{(-2+1)^2+(2+5)^2}\\\\\sqrt{(-1)^2+(7)^2}\\\\\sqrt{1+49}\\\\\sqrt{50}=7.07=7.1

Add distances to find the perimeter:

5+8.1+7.1=20.2

2.) Part A:

You need to use the mid-point formula:

midpoint=(\frac{x_{1}+x_{2}}{2} ,\frac{y_{1}+y_{2}}{2} )

(3,2)(7,11)\\\\(\frac{3+7}{2},\frac{2+11}{2})\\\\(\frac{10}{2},\frac{13}{2})\\\\m=(  5,6.5)

Part B:

1. Use the slope-intercept formula:

y=mx+b

M as the slope, b the y-intercept.

Find the slope of the two points A and B using the slope formula:

m=\frac{y_{2}-y_{1}}{x_{2}-x_{1}} =\frac{rise}{run}

Insert slope as m into equation.

Take point A as coordinates (x,y) and insert into the equation. Solve for the intercept, b:

(y)=m(x)+b

Insert the value of b into the equation.

2.  Use the mid-point coordinate. Take the slope.

If you need to find the perpendicular bisector, you will take the negative reciprocal of the slope. Switch the sign and flip it. Ex:

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

Insert the new slope into the slope-intercept equation as m.

Take the mid-point coordinate as (x,y) and insert into the equation with the new points. Solve for b.

Insert the value of b.

You might be interested in
HELP!!!!!!!<br><br><br> What is 2 8/10 + (-3.5) in decimal form
GarryVolchara [31]

Answer: -0.7

Step-by-step explanation:

7 0
3 years ago
ms ari buys and sells dimonds she has a dimond that weighs 1.825 carats what is the weight of ms aris dimond rounded to the near
Aneli [31]
1.825 rounded to the nearest hundredth is 1.83 because the number after 2 is 5
5 0
3 years ago
Read 2 more answers
How much time has passed from the first clock to the second clock?
Gelneren [198K]
I believe 4 hours and 35 minutes has passed.

4 0
2 years ago
Change 5/8 to a percentage. <br> A. 87.5%<br> B. 62.5%<br> C. 92.5%<br> D. 37.5%
lawyer [7]
5/8 = 5 ÷ 8 = .625

move decimal 2 places to right for %

.625 = 62.5%
6 0
3 years ago
PLEAS HELP!!!! HAVING TROUBLE! <br><br> (see attached image)
Novosadov [1.4K]
There is no postulate that can shows that these triangles are congruent, SSA is not usable and does not show congruence.
3 0
3 years ago
Other questions:
  • What is the length of BC?<br><br> 18<br> 24<br> 20<br> 22
    11·2 answers
  • Graph 2 + 3y = 6. Please hurry
    11·1 answer
  • Before reporting the results of the survival analysis, the investigators compared baseline characteristics of the 38 people who
    9·1 answer
  • At a school number of boy:number of girls is in the ratio 11:9
    6·1 answer
  • On Sunday, Antonio spent total of 3/1/4 hours driving and 1/3/4 hours gardening. How much longer did he spend driving write your
    12·2 answers
  • Please HELP !!!!!!!!!!!!!!! IT IS DUE TODAY :( The circle graph below shows the different ways students get home from Astro-park
    10·1 answer
  • Help me please thanks​
    7·1 answer
  • The price of a sweater was reduced from $25 to &amp;19. By what percentage was the sweater reduced by?
    6·1 answer
  • HElPPPPP NEED QUiCk whats the answer for 2+2=____<br> a.5<br> b.7<br> c.4<br> d.3
    11·2 answers
  • X2 + 3x + 1 = 5. know the answer but need to understand how?
    5·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!