A mathematical relationship or a rule mostly expressed in symbols
Rob has R quarters, and David has R + 24 or 24 more than rob, so together they have 2R+24
Answer:
15
Step-by-step explanation:
If A||B then the sum of given angles must be equal to 180°
2x + 5 + 5x - 80 = 180 add like terms
7x - 75 = 180 subtract 75 from both sides
7x = 105 divide both sides by 7
x = 15
Substitute 3x+1 for x. Then solve from there
