Lines l and m are parallel, cut by transversal t. The angle marked a and the angle marked b are co-interior, with a = (2x + 15) and b = (3x - 25). First find x, then find angle a.

Question

Accepted Answer

91. Co-interior angles are supplementary: (2x + 15) + (3x - 25) = 180, so 5x - 10 = 180, 5x = 190, x = 38. Angle a = 2(38) + 15 = 91°.

Lines l and m are parallel, cut by transversal t. The angle marked a and the angle marked $b$ are co-interior, with $a = (2 x + 15)$ and $b = (3 x - 25)$ .
First find $x$ , then find angle a.

Step-by-Step Solution

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More Class 7 Transversal and Parallel Lines practice

Lines l and m are parallel, cut by transversal t. The angle marked a and the angle marked b are co-interior, with a=(2x+15) and b=(3x−25).First find x, then find angle a.

Step-by-Step Solution

Master this chapter in 30 minutes a day.

More Class 7 Transversal and Parallel Lines practice

Lines l and m are parallel, cut by transversal t. The angle marked a and the angle marked $b$ are co-interior, with $a = (2 x + 15)$ and $b = (3 x - 25)$ .
First find $x$ , then find angle a.