Answer:
230
Step-by-step explanation:
Answer:
80 degrees
Step-by-step explanation:
the sides add upp to 180 degrees so 180-70-30=80
Answer: b is the answer
Step-by-step explanation:
Answer:
y = -7 and x = -36
Step-by-step explanation:
x - 4y = -8
5y - 1 = x
→ Substitute 5y - 1 into x - 4y = -8
5y - 1 - 4y = -8
→ Simplify
y - 1 = -8
→ Add 1 to both sides
y = -7
→ Substitute y = -7 into 5y - 1
( 5 × -7 ) - 1 = -36
