Answer:
x=70
Step-by-step explanation:
sum is angles of a Pentagon=540°
x°+138°+2x°+80°+112°=540°
3x°+330°=540°
3x°=540°-330°
3x°=210°
3x°/3°=210°/3°
x=70
hope this is helpful
Wait isn’t it 30 or am I reading it wrong?
Answer:5.4×105+2.3×104.
Step-by-step explanation: