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
Andrew [12]
3 years ago
13

The perimeter of an equilateral triangle is 27 centimeters. Find the altitude of the triangle

Mathematics
1 answer:
Naily [24]3 years ago
4 0
7.79cm It is an equilateral triangle so it has 3 equal sides. That means each side is 9cm. <span>
Now draw a line from the top of the equilateral triangle to the base, and dividing it into two. You will have made two smaller triangles, with sides 9, 4.5, and h (the one you want to find). 

A line drawn from the apex of an equilateral triangle to the midpoint of the base is perpendicular to the base, so you can use Pythagoras' Theorem! 

4.5^2 + h^2 = 9^2 
h = sqrt(9^2 - 4.5^2) 
Therefore, the height is 7.79cm (2 decimal places)</span><span>
</span>
You might be interested in
Please help me guyys
algol13

Answer:

the answer is A! goodluck with hw thk

4 0
2 years ago
4 (1/2x 7) = 12. what is x. can someone do the whole answer with the work?
alina1380 [7]
4(1/2x7)=12 <=> x28/2=12
x=12*2/28=24/28=12/14=6/7
8 0
3 years ago
The sum of m and 188 is 232 <br><br>write the sentence as an equation ​
makvit [3.9K]

Answer:

m + 188 = 232

Step-by-step explanation:

sum → +

m + 188 = 232

5 0
3 years ago
Read 2 more answers
What is the value of x? º
attashe74 [19]
X equals 62 because you take 147 and subtract it from 180 and that gives you 33.
then you add 33 and 85 together to give you 118.  Then you subtract 118 from 180 and that gives you 62.
x=62
6 0
3 years ago
Read 2 more answers
Please someone help me !!!!!
Sveta_85 [38]
X² = 16
x = ±√16
x = <span>±4

</span>The roots of this equation are -4 and 4
<span>Сorrect answer is third from above</span>
6 0
3 years ago
Other questions:
  • What is 3,996 + 7899
    6·2 answers
  • What is the doubling time of bacteria if you start with two bacteria and there are 128 bacteria after 3hrs?
    6·1 answer
  • The sales tax in one state is 7% .Write a function rule for the total cost of an item with selling price x.Then find the total c
    15·1 answer
  • Which is the equation for bc?
    7·2 answers
  • Trig please help
    6·1 answer
  • Could someone help me with this? I give all my points.
    12·1 answer
  • 06.02)A six-sided number cube labeled 1 through 6 is rolled 600 times. An odd number is rolled 272 times. Compare the experiment
    8·2 answers
  • Show the working pls :))
    6·1 answer
  • Priya has 5 pencils, each x inches in length. When she lines up the pencils end to end, they measure 34.5 inches. Select all the
    11·1 answer
  • The length of a rectangle is 4 m
    15·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!