5x+2y=7
7x-2y=5 its subtract not add
3x² -16x-12 =0
We can solve this equation using formula.
a=3, b=-16, c=-12
3m^2+2p^2-15
3(3)^2+2(10)^2-15
3(9)+2(100)-15
21+200-15
206
The value of angle C in the triangle is 50°.
<h3>How to calculate the triangle?</h3>
From the information given, the angle A = 60° while B is given as 70° and we are told to calculate the value of C.
It should be noted that the sum of angles on a triangle is 180°. Therefore, the value of C will be:
= 180° - (60° + 70°)
= 180° - 130°
= 50°
Learn more about triangles on:
brainly.com/question/1058720
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