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alexandr1967 [171]
3 years ago
9

What is the answer to C​

Mathematics
1 answer:
Ira Lisetskai [31]3 years ago
3 0

Answer:

C = 15

Step-by-step explanation:

Both (7c-7)° & (6c-8)° if get combined will form a straight angle i.e. 180° because both the angles lie on the same line. So,

7c - 7 + 6c - 8 = 180°

=  > 13c - 15 = 180°

=  > 13c =  180 + 15 = 195

=  > c =  \frac{195}{13}  = 15

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The area of triangle for the given coordinates is  1.5\sqrt{4.6}

Step-by-step explanation:

Given coordinates of triangles as

A = (0,0)

B = (3,4)

C = (3,2)

So, The measure of length AB = a = \sqrt{(x_2-x_1)^{2}+(y_2-y_1)^{2}}

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The measure of length BC = b = \sqrt{(x_2-x_1)^{2}+(y_2-y_1)^{2}}

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And

So, The measure of length CA = c = \sqrt{(x_2-x_1)^{2}+(y_2-y_1)^{2}}

Or, c = \sqrt{(3-0)^{2}+(2-0)^{2}}

Or, c =  \sqrt{9+4}

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A = \sqrt{s\times (s-a)\times (s-b)\times (s-c)}

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∴  Area of triangle = 1.5\sqrt{4.6}

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