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REY [17]
3 years ago
14

Please help me with a problem of Derive the Formula for Area of a Triangle

Mathematics
1 answer:
ss7ja [257]3 years ago
4 0
You can use
\frac{1}{2} ab \sin(c)
Since it is an irregular triangle.
C refers to the angle and a & b refer to the adjacent sides.

So,
\frac{1}{2}  \times4.3 \times 3.8 \sin(53)  \\  = 6.52485211 \\  = 6.52

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3 years ago
Ill mark brainlist plss help
Lynna [10]

Answer:

it will be 14.10 because 2.35x 6 equals 14.10$

Step-by-step explanation:

7 0
3 years ago
How do you reduce the fraction of 600 out of 25
erik [133]

Answer:

24

Step-by-step explanation:

600/25

25 goes into 600 24 times

so 600/25 could be reduced to a whole number, 24

4 0
3 years ago
Which line is perpendicular to a line that has a slope of -5/6?
Anni [7]

Answer:

Line LM

Step-by-step explanation:

First, we need to know what the slope is of a line that would be perpendicular to a line with a slope of -5/6. To find this, we take the reciprocal and multiply it by -1. Therefore, the line we are looking for needs to have a slope of 6/5.

Based on the fact that the slope is positive, we can eliminate lines PQ and JK as they have a negative slope. This leaves us with lines LM and NO.

To find out whether or not it is between LM and NO, you could eyeball it by looking at the graph and simply counting which might be faster if you understand how to do that (rise/run), or you can use the pair of coordinates given to you on each line to calculate for slope.

Line LM - \frac{-3-3}{-5-0}=\frac{-6}{-5}=\frac{6}{5}

Line NO - \frac{-5-0}{-6-0}=\frac{-5}{-6}=\frac{5}{6}

Based on this, we know that line LM is perpendicular to a line that has a slope of -5/6.

<em>If you need help on calculating slope from two points, I'd suggest watching this video: </em><u>https://www.brightstorm.com/math/algebra/linear-equations-and-their-graphs/finding-the-slope-of-a-line-from-2-points-problem-1/#:~:text=Use%20the%20slope%20formula%20to,second%20points%20are%20x2%2C%20y2.</u>

7 0
2 years ago
The perimeter of a regular octagon is equal to 50 cm. Find the length of its side.
agasfer [191]
An octagon has 8 sides.
Divide 50 cm / 8 sides.
Each side is 6.25 cm.
8 0
3 years ago
Read 2 more answers
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