When it comes to angles, a supplementary angle adds up to 180 I need to know what the value of x is and figure out if the answer will add up?

2x+10 and 3x
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Will gve pints stars and brainliest

21 type the correct answer in the box. use numerals instead of words. if necessary, use / for the fraction bar. the solution set of n2 - 14n = -45 is { (separate the solutions with a comma)

Rewrite the following quadratic functions in intercept or factored form. show your work. y = 5x^2 + 10x