Question

i have to solve for ABC n round to nearest whole number

Answer 1

Answer:

90degrees

Explanation:

The sum of interior angle of a triangle si 180degrees

Hence, 7x-1 + 4x+1 + 3x - 2 = 180

Collect the like terms;

7x+4x+3x-1+1-2 = 180

14x - 2 = 180

14x = 180+2

14x = 182

x = 182/14

x = 13

Get m

From the triangle;

mSubstitute x = 13 into the expression

mmm

Hence the measure of m