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
Furkat [3]
2 years ago
8

What is the perimeter of abc with vertices a(-2 9)?

Mathematics
1 answer:
vazorg [7]2 years ago
6 0
For finding the perimeter of abc (triangle), we MUST need the two others coordinates of b and c
let b(1, 2) and c (2, -4)
we need to calculate the distances ab, ac, and bc
vector (ab)=(1-(-2), 2-9)=(3, -7), so its length is ab=sqrt(3²+ (-7)²)=7.61
realising the same method, we find bc=6.08, ac=13.60

so the perimeter of abc is P= ab+bc+ca=13.60+6.08+7.61=27.29
You might be interested in
A sequence of transformations maps ∆ABC to ∆A′B′C′. The sequence of transformations that maps ∆ABC to ∆A′B′C′ is a reflection ac
34kurt
<span>10 units to the right and 2 units up,</span>
8 0
3 years ago
Read 2 more answers
Someone please help me
pentagon [3]

Answer:

Option 3 or Option 4.

Step-by-step explanation:

I have this doubt because actually, a rhombus with a right angle (one) is not necessarily a square. Some rhombuses have one right angle and are still not squares. Now, if the four angles are right, it is a square, but this only says one.

On other hand, a parallelogram with congruent diagonals isn't a square necessarily either. Rectangles have congruent diagonals and are parallelograms.

In case you only can answer with one, I'll say is option 3, hope it helps!

 

8 0
2 years ago
If f(x)=3x^2+15, what is the value of f(4).
nignag [31]

f(4) = 3×4^2+15

4^2=16

3×16

48+15

63

f(4)=63

7 0
3 years ago
Read 2 more answers
PLEASE ANSWER OR ILL FAIL MATH
Anit [1.1K]
The answer is 210 just multiply 420 by 7 cause theres 7 days is a week you get 2,940 minus from 3,150
4 0
3 years ago
David has 52 cans, Sarah has 51 less than X how many does Sarah have
True [87]

Answer:

According to my very precise calculations, I've come to the conclusion that the answer is 1.

7 0
2 years ago
Other questions:
  • There is a cafe at the carpark it is 13 metres long and 8 metres wide what is the area of the cafe
    7·2 answers
  • HELP ASAP WILL MARK BRAINLIEST<br> IF YOU DONT KNOW DONT ANSWER
    13·2 answers
  • Solv this for T<br><br>1/5t + 2- ( ) = 17- ( ) 1/5t = ( ) × 1/5t= ( ) t =​
    12·1 answer
  • Please help me with my math question?
    9·1 answer
  • 2,11,20 find the t15
    6·1 answer
  • Please help me I don't understand this at all and I can't get it. I spent 4 hours on these equations
    12·2 answers
  • Please tell me? thx for ur help &lt;3
    8·2 answers
  • Identify two opposite rays.​
    6·2 answers
  • Which of the following is a non-real complex number?
    15·1 answer
  • In a certain city, the percent of children under
    13·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!