If angles 1, 2, and 3 are in the ratio 6:5:4,
find their measures.

∠ 1 = 72° , ∠ 2 = 60° , ∠ 3 = 48°

Step-by-step explanation:

The 3 angles lie on a straight line and sum to 180°

sum the parts of the ratio , 6 + 5 + 4 = 15 parts

Divide 180° by 15 to find the value of one part of the ratio

180° ÷ 15 = 12 , then

∠ 1 = 12 × 6 = 72°

∠ 2 = 12 × 5 = 60°

∠ 3 = 12 × 4 = 48°

step-by-step explanation:

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check above link.

graphically?   well, you graph them both, the solutions is where they both intersect each other, since there are two solutions, meaning they will meet twice, or namely the linear will run into the quadratic curve twice, and where they meet, those x,y coordinates are the solutions to the system.