I hope this helps. You can use quadrant first before the other method(first one) because the first one looks for the discriminant.
Answer: isosceles triangle!
I'd say D because in the others the positive numbers are in the wrong place.
Answer:
x = 37
m∠a = 104°
m∠b = 76
Step-by-step explanation:
Two supplementary angles will add up to 180 degrees. We can create an equation and solve for x.
3x - 7 + 2x + 2 = 180
~Combine like terms
5x - 5 = 180
~Add 5 to both sides
5x = 185
~Divide 5 to both sides
x = 37
~Find the measure of angle A
3(37) - 7
104
~Find the measure of angle B
2(37) + 2
76
Best of Luck!
First turn the statement into an equation:
3X=12+(X+26). You can combine the 12+26 and now you should have 3X=X+38. Subtract an X from both sides of the equation (2X=38) now finally divide by 2 to find X. X=19
