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Ket [755]
3 years ago
12

How do you find the area of a triangle if you only know it's three sides?

Mathematics
1 answer:
DiKsa [7]3 years ago
8 0
You would have to find the height.

To do this, you cut the triangle from the upper vertex to the base to create two new triangles.

Then you use the Law of Cosines. You could use the google calculator for this by searching “law of cosines calculator” and inputting the values, but in case of a test, the formula is a^2 = b^2 + c^2 - 2bc cosA

If you could provide an example of a triangle, I will gladly help you with the steps! Hope this helped!
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Solve for x. <br><br> Enter your answer in the box. <br> X=
seraphim [82]
This pentagon can be split into three triangles, so the total for this pentagon is 540°. Add up all angles to equal 540°.

x= unknown angle

90° + 107° + 144° + 138° + x= 540°
479 + x= 540
subtract 479 from both sides
x= 61

CHECK:
90 + 107 + 144 + 138 + 61= 540
540= 540

ANSWER: x= 61°

Hope this helps! :)
4 0
3 years ago
Read 2 more answers
18⅔ ÷ ⅔ <br>how many children are there?<br>​
kiruha [24]
The answer is 28

Explanation:


18⅔ ÷ ⅔

= 56/3 ÷ 2/3
= 56/3 x 3/2

= 56/2

=28
4 0
2 years ago
A researcher believes that headaches can be relieved by drinking water flavored by
olganol [36]

Answer: A. Experimental Study

4 0
3 years ago
Which of the following lines has a negative slope?
Ann [662]

Answer: 3rd graph

Explanation: In order to determine which graph shows a downward or negative slope, we need to be able to look at each of the graphs and determine which line is decreasing when going from left to right.

Notice that the 3rd graph is the only graph with a downward

or negative slope which means that this is our answer.

3 0
3 years ago
In a manufacturing process that laminates several ceramic layers, 1% of the assembles are defective. Assume that the assemblies
Setler79 [48]
There are several information's already given in the question. based on those information's, the answer can be easily deduced.

a. It is already given that 1% are defective. It is required to find the number that is needed to be checked to get 5 defective products.
Then
1% of X = 5
0.01X = 5
x = 5/0.01
   = 500

b. <span>σ = square root [(<span><span><span><span>n^2</span>−1)/</span>12]
       = square root [(250000 - 1)/12]
       = square root [249999/12]
       = square root (20833.25)
       = 144.34
       = 144
I hope the procedure is clear enough for you to understand. I also hope that this is the answer that you were looking for and the answer has actually come to your desired help.</span></span></span>
6 0
3 years ago
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