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
miss Akunina [59]
3 years ago
8

The altitude of an equilateral triangle is 4.5 in. Find it's sides.

Mathematics
2 answers:
Mrrafil [7]3 years ago
4 0

Answer:

The length of each side is 3√3 in  or 5.20 in to the nearest hundredth.-

Step-by-step explanation:

The altitude splits up the triangle into two 30-60-90 triangles.

The ratio of the sides of these triangles is 2:1:√3.

The ratio of the altitude to the hypotenuse ( which is the side of the equilateral triangle ) = √3 : 2 so we have the equation:

2  / √3 = h / 4.5  where h is the required side.

h = 2*4.5 / √3

= 9 /√3

= 3 √3

= 5.196 in.

never [62]3 years ago
3 0

Answer:

Step-by-step explanation:

Let the length of each side be x. We can divide the triangle into two to get two right angled triangles which side will be x (hypotenuse), 4.5 (height), x/2 for base.

Using Pythagoras's theorem

x² = 4.5² + (x/2)²

x² = 81/4 + x²/4

x² - x²/4 = 81/4

3/4x² = 81/4

x² = 27

x = √27 = 3√3 in

You might be interested in
A right rectangular prism is 5 3/4 cm wide, 10 1/2 cm long, and 8 cm tall.
irina1246 [14]

Answer:

Multiply all the numbers and you will get your answer. It is 483 cm^3

Hope this helped, have an awesome day and please mark brainliest if u want too.

4 0
3 years ago
Find the measure of angle 5<br> I WILL GIVE BRAINLIEST TO THE CORRECT ANSWER
aliya0001 [1]

Answer:

-4x+161

Step-by-step explanation:

why-

because it is correspondoing so that is the answer

6 0
2 years ago
What is the difference of the fractions? Use the number line and equivalent fractions to help find the answer.
Dmitry_Shevchenko [17]

9514 1404 393

Answer:

  (c)  -3/4

Step-by-step explanation:

Subtracting a positive number moves you to the left on the number line. Subtracting a negative number moves you in the opposite direction, to the right.

Here, we start at -2 1/2 = -5/2, and we move 1 3/4 = 7/4 to the right from there. Each mark on this number line is 1/4 unit, so we move 7 marks. The results is ...

  -2 1/2 -(-1 3/4) = -5/2 +7/4

  = -10/4 +7/4 = -3/4

5 0
2 years ago
Find the second derivative y=1/5x^2+1/11x
Amiraneli [1.4K]

\frac{dy}{dx}=\frac{1}{5}.x^{2-1}.2 + \frac{1}{11}.x^{1-1}.1

\frac{dy}{dx}=\frac{2}{5}.x+\frac{1}{11}

\frac{d^2y}{dx^2}=\frac{2}{5}.x^{1-1}.1

\frac{d^2y}{dx^2}=\frac{2}{5}

8 0
3 years ago
Question 2 of 43
murzikaleks [220]
The Awnser is 64 cubic
8 0
2 years ago
Other questions:
  • I need help with b and question 10 (all parts) HELP PLEASE URGENT
    12·1 answer
  • The sides of a triangle are in the ratio 3 : 4 : 5. What is the length of each side if the perimeter of the triangle is 90 cm
    5·1 answer
  • ⭐️ Does anyone know this?!
    7·1 answer
  • Which expression is equivalent to 64 – 9x^2?
    11·1 answer
  • Which property is BEST to use when simplifying 5/18 + 2/9 + 13/18?
    9·1 answer
  • Simplify the expression below. 4³–(3x²)³+ (x²)³
    6·1 answer
  • Have 50000 and a increase of 4% each year for 15 years
    7·1 answer
  • Find the reference angle for -369°​
    13·1 answer
  • Draw graph x + y = 7 and x - y = 2 on the same graph
    14·2 answers
  • Plot the data points into the calculator. Resize the window to fit the data and use the power regression function.
    13·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!