Step-by-step explanation:
Cancel by elimination
4x+y=2
x-y=3
5x=5 because the Ys cancel out because it is positive and negative
x=1 when you divide by 5 on both sides to find x
then plug 1 in for x in a equation then solve
4(1)+y=2
4+y=2
y=-2 when you subtract 4 on both sides
(1,-2)
Answer:
- 1. Sometimes, 2. Never, 3. Always, 4. Never
Step-by-step explanation:
1. Vertical angles are complementary
-
Sometimes (if measure45°)
2. Vertical angles are adjacent
3. The complement of an acute angle is an acute angle
-
Always. Both of them < 90°
4. The supplement of an obtuse angle is an obtuse angle
- Never. Obtuse angle > 90°, supplement is (180° - obtuse), which is <90° so is acute
Answer:
D= 19
Step-by-step explanation:
114 ÷ 6 is 19
