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
Vikki [24]
3 years ago
11

Find the exact area of an equilateral triangle if the length of one side is 40

Mathematics
1 answer:
VARVARA [1.3K]3 years ago
8 0
Equilateral triangle is a triangle with the 3 sides of the same length, and the 3 angles with the same measures/degree.
The formula to find the area of a triangle is base x height/2 , you do have the base (40), but you need the height. To find the height of an equilateral triangle you use the formula: side/2 x radical3, this way u'll find the height and therefor can calculate the area of the triangle.
Hope that helped :)
You might be interested in
a rectangle has an area that is represented by 9x²-4. the length of the rectangle is 3x-2. what is the width?
PSYCHO15rus [73]

Step-by-step explanation:

the area is

length × width

(3x - 2) × width = 9x² - 4

to find width we could do a real polynomial division or simply recognize the fact that

(a + b)(a - b) = a² - b²

and we see that in our area calculation we are missing the (a + b) factor.

so, width = (3x + 2)

but if you want the division :

9x² - 4 : 3x - 2 = 3x + 2

- 9x² - 6x

-----------------

0 6x - 4

- 6x - 4

----------------------

0 0

again, width = (3x + 2)

6 0
2 years ago
Dec 4,
sasho [114]

Answer:

y = -0.8x - 5

Step-by-step explanation:

x1 = (XA + XB) / 2 = -5

y1 = (YA + YB) / 2 = -1

m = (XA - XB) / (YA - YB) = -0

__________________________________________

(y - -1) = -0.8(x - -5)

y - -1 = -0.8x - 4

y = -0.8x - 4 + -1

y = -0.8x - 5

8 0
3 years ago
Grandpa schmidt is 75 years old. this is 9 years less than seven times the age of junior schmidt. how old is junior
Ad libitum [116K]
Grandpa's age is 75 years
Seven times the age of junior = age of grandpa + 9 jears = 75 + 9 = 84 years
Hence, the age of junior will be 84 / 7 = 12 years. (Since 84 is seven times his age, you have to devide by seven).
--> Junior is 12 years old.

I hope I've been helpful, MarkV
3 0
2 years ago
Let f(x) =x+1 and g(x)=1/x. The graph of (f o g)(x) is shown below. What is the range of (f o g)(x)?
sveta [45]
Looks like all real numbers except 1. It touch's all the y except 1 aka range
6 0
3 years ago
Read 2 more answers
16. simplify the rational expression. state any excluded values. x^2-x-6/x+2
belka [17]
X^2-X-6=(X-3)(X+2)
(X+2)/(x+2)=1
Which just leaves (x-3)
X=3
5 0
3 years ago
Other questions:
  • Is it possible for a composite number to have more then o e prime factorization ? and is it possible for a number to have no pri
    12·1 answer
  • What is the midpoint of the segment shown below ?
    11·2 answers
  • The number 900 has an interesting property in that the only primes that divide into it evenly are 2, 3, and 5. What are the next
    12·1 answer
  • PLEASE HELP QUICK!!!
    13·1 answer
  • The heights of a certain type of tree are approximately normally distributed with a mean height p = 5 ft and a standard
    7·1 answer
  • Create an expression equivalent to 4(3x+2y)
    13·1 answer
  • Tell whether the lines with the given slopes are parallel, perpendicular, or neither. Line 1: m = 2 2)
    6·1 answer
  • What three rational numbers are between <br> 7/12 and 7/11
    5·1 answer
  • How do you even do this?! i’m so confused
    11·1 answer
  • Question Progress 10 Homework Progress 17/ x: y = 2:3 Which is the correct equation? A 2x = 3y B 2y = 3x C y = x - 1 D y = x + 1
    6·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!