Step-by-step explanation:
X + y + z = 180⁰
x = y (alternate interior angle of parallel lines)
y = 180⁰ - 2x (linear pair)
180 - x + 180 - x + z = 180
360 -2x + z = 180⁰
-2x + z = 180⁰
z = 90⁰ hence proved...
x = y
Answer:
false
Step-by-step explanation:
whole numbers can also be negative
3.
1000 miles per month.
12 months in a year.
1000 × 12 = 12000 miles per year
Oil change every 4000 miles.
12000 ÷ 4000 = 3
Therefore 3 oil changes per year.
Answer:
{4, 4.5, 5, 5.5, 6, 6.5, 7} {0, 1, 2, 3, 4, 5, 6}. 4 ≤ h ≤ 7 0 ≤ d ≤ 6. 4 ≤ d ≤ 7. {4, 5, 6, 7}. 0 ≤ h ≤ 6 0 ≤ h ≤ 7