Respuesta :
Answer: x=40
Step-by-step explanation:
so you would add the two angles you already know.
30+63=93
The sum of the angles of a triangle is always 180°. Knowing this, you can do
180-93=87
so you know the third angle is 87°
plug this into the equation: 2x+7
2x+7=87
subtract both sides by 7
2x=80
divide by two
x=40
The correct answer is X=40 because
1. Add the 2 angles you already know.
30 + 63 = 93
2. The sum of all angles in a triangle is always 180°
180 - 93 = 87
3. third angle is 87°
2x + 7 = 87
4. Subtract BOTH sides by 7
2x = 80
5. Divide by 2
X = 40
Hope this helped!!!❤️
1. Add the 2 angles you already know.
30 + 63 = 93
2. The sum of all angles in a triangle is always 180°
180 - 93 = 87
3. third angle is 87°
2x + 7 = 87
4. Subtract BOTH sides by 7
2x = 80
5. Divide by 2
X = 40
Hope this helped!!!❤️