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galina1969 [7]
3 years ago
14

A triangle has sides with lengths of 5x-7,3x-4 and 2x-6. What is the perimeter of the triangle?

Mathematics
1 answer:
boyakko [2]3 years ago
7 0
The perimeter is the sum of all the sides, so P = (5x -7) + (3x-4) + (2x -6). Then group like terms so you have p = 5x + 3x + 2x -7-4-6 and end up with P = 10x - 17
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max2010maxim [7]

Answer:

Area = 42.43 square cm

Step-by-step explanation:

Using Heron's Formula :

 Area = \sqrt{s\times (s-a) \times (s-b) \times(s -c)} \ , \ where  \ s \ =\ \frac{a+ b+ c}{2}

<em><u>Find Area :</u></em>

<em><u></u></em>

s = \frac{11 + 9 + 10 }{2} = \frac{30}{2} = 15

Area = \sqrt{15 \times ( 15 - 11 ) \times { (15 - 9 ) \times ( 15 -10)}\\\\

      = \sqrt{15 \times 4 \times 6 \times 5}\\\\=\sqrt{1800}

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7 0
3 years ago
5th grade math. Correct answer will be marked brainliest.
Marat540 [252]

Answer:

0.065

Step-by-step explanation:

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5 0
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Fittoniya [83]
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