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
nirvana33 [79]
3 years ago
8

Find the area of the equilateral triangle

Mathematics
2 answers:
uranmaximum [27]3 years ago
8 0

Answer:

Step-by-step explanation:

Suppose that the side length is s.  Imagine that one side is level.  Draw a vertical line through the top vertex perpendicular to the base (level side).  Label this vertical line "h."  Then h and s are related as follows:

                               √3          h

sin 60 degrees = ------- = --------

                                 2           s

                                                                   s√3

and so h = the height of the triangle =  -----------

                                                                       2

The area of this triangle is (1/2)(base)(height), which here is:

(1/2)(s/2)( s√3 /2), or

        (s^2)√3

A = ---------------

               8                                

dezoksy [38]3 years ago
6 0
Is there supposed to be a picture of the triangle?
You might be interested in
GIVING BRAINLIEST
Arte-miy333 [17]

Answer:

i dont know

Step-by-step explanation:

8 0
2 years ago
Is (x+5)2 equivalent to 2x2+10x +10? Explain why or<br> why not?
Rzqust [24]

Answer:

no

Step-by-step explanation:

no because its equal to 2x+10

4 0
3 years ago
SELECT ALL OF THE EQUATIONS THAT
anygoal [31]

Answer:

x+9= 12 yes x = 3

4 + X= 9 no x = 5

X x 5 = 18 no x = 3.6

21 / x= 7 yes x= 3

hope this helps

4 0
3 years ago
The number of hours, h, it takes for a block of ice to melt varies inversely as the temperature, t. If it takes 3 hours for a
Blababa [14]

Answer:

180

Step-by-step explanation:

hours = constant / temperature     hours varies inversely as the temperature

3 = c / 60

c (constant) = 3 * 60 = 180

3 0
3 years ago
40 POINTS!!!!
laiz [17]

Answer:

6 sqrt(3) = y

Step-by-step explanation:

We can use the leg rule to find y

hyp      leg

----- = -------

leg        part

9+3      y

----- = -------

y       9

Using cross products

12*9 = y^2

108 = y^2

Taking the square root of each side

sqrt(108) = sqrt(y^2)

sqrt(36 *3) = y

6 sqrt(3) = y

7 0
3 years ago
Other questions:
  • What times what equals -3 in decimal form?<br> PLZ help me
    5·2 answers
  • If a string that is 15.5 inches long is cut into equal pieces that are 1.25 inches long, how many pieces of ribbon can be create
    11·1 answer
  • 4x - 5 - 2x = x - 5<br><br> No Solution<br> X=0<br> X=4<br> X=5
    10·1 answer
  • Plzzzzzz help it seems really easy but im just really du mb lmf ao
    13·2 answers
  • HELP HELP HELPPPP<br> ILL GIVE BRAINLIEST HELPPPPPPPPP<br> 100 POINTSSS
    12·2 answers
  • How many milligrams of medication are in 75 mL of a 2% solution?<br><br> Help
    5·1 answer
  • HELP- PLS SOMEONE HELP ME SOB
    14·1 answer
  • In the figure below, EC || AB. Find the length of EC.
    10·2 answers
  • Can someone help me out please!!!!
    14·1 answer
  • What is the rate of return when 15 shares of stock a, purchased for $15/share, are sold for $330? the commission on the sale is
    5·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!