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
Elena-2011 [213]
3 years ago
12

What is the area of the triangle? 9 4 12

Mathematics
1 answer:
LUCKY_DIMON [66]3 years ago
7 0

Answer:

  13.636

Step-by-step explanation:

The area can be found using Heron's formula:

  A = √(s(s-a)(s-b)(s-c))

where s=(a+b+c)/2.

For the given triangle, ...

  a=9, b=4, c=12, s=(9+4+12)/2 = 12.5

  A = √(12.5(3.5)(8.5)(0.5)) = √185.9375 ≈ 13.636

The area of the triangle is about 13.636 square units.

You might be interested in
Can you help me I need to send this to my teacher like TODAY
Rashid [163]
Coordinates when you see t
8 0
2 years ago
Read 2 more answers
What’s is the value of n? HELP ASAP PLEASE
earnstyle [38]

Answer:

The answer should be 69°

Step-by-step explanation:

Each line is being cut by a transversal, that means that the degree on the other side of it, added with the given degree will add up to 180°

1. On the right, you need to find the interior angle where 160° is outside so you subtract 180° from 160° to find the angle inside. That gives you 20°

2. On the top left you have 131° so 180°-131°=49°

Next you add the angles you have and then subtract it from 180 to get the interior angle with n° outside.

3. 20°+49°=69°

4. 180°-69°=111°

Then you do the same thing as the beginning which would be n°+111°=180°

5. n°+111°=180°, that means n=69°

Hopefully that clears it up for you :)

7 0
3 years ago
Need help !!!!!!!!!!!!!!!!!!!
Tems11 [23]
Rectangle. it’s a 2d 4 sided shape with 2 sets of parallel sides
4 0
3 years ago
Helpppp please i’m struggling
IrinaK [193]
C is the correct answer
6 0
2 years ago
Hi I'm looking to solve this question for my work but I'm super stuck and I need help asap. Thsnks
MrMuchimi
10w + 9 Are you combing like terms?
8 0
3 years ago
Other questions:
  • What does the value in front of x represents?
    8·1 answer
  • Complete the pattern.
    14·1 answer
  • 16 1/2 to whole number
    11·1 answer
  • The numbers 4 through 14 are placed in a
    9·1 answer
  • What is the slope of the line that contains the points (4, -1) and (-1, 4)
    7·2 answers
  • The video store just increased the price of renting a game by 1.25. Write a formula that will help Seth determine how much he'll
    15·1 answer
  • inches? What is the side length of an equilateral triangle with a perimeter of 36 36% inches B 181 inches C121 inches D 122 inch
    15·1 answer
  • Please help! will give brainliest
    8·1 answer
  • Evaluate the following expression when a=4,b=2 , and c=9 c/3 + A
    8·2 answers
  • In science class, the average score on a lab report is 87 points, with all students scoring within 1.8 points of the average. If
    5·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!