okay so I need help with this I have it missing and I don't know how to do this I hope you can help me

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6.- All its sides are different so it is a Scalene triangle ( by its sides) also is an acute triangle because its three angles measure less than 90°.

10.- Also is a Scalene triangle and an acute triangle.

5.- It's an Scalene triangle because all its sides have a different length

it's an obtuse triangle because 1 of its angles measure more than 90°.

15.-

8x + 4 + 80 + 3x - 6 = 180

11x + 78 = 180

11x = 180 - 78

11x = 102

x = 102/11

13.- 64 + 27 + 97 + x = 180

x = 180 - 64 - 27 - 97

x = -8

16.-

x + 23 + 80 + 4x + 17 = 180

5x = 180 - 23 - 80 - 17

5x = 60

x = 12

17.- 5x + 10 + 58 + 180 - 11x - 2 = 180

-6x = -10 - 58 + 2

-6x = -68 +2

-6x = -66

x = -66/-6

x = 11

the equation cos(35) =a/25 can be used to find the length of bc what is the length of bc? round to the nearest tenth

step-by-step explanation: