Answer:
x²+1 is the second
Step-by-step explanation:
2x+24=40°
4x+43=75°
x²+1=65°
(2x+24) + (4x +43) + (x²+1)=180
x²+6x+68=180
x1=-14
x2=8
since there's no negative angle, we'll use x=8
Answer:
C is 5x+13 D is 5x+12
Step-by-step explanation:
expand brackets
Answer:
11/200
Step-by-step explanation:
=5.5%
=5.5/100
=55/1000
=55/5
------------
1000/5
= 11/200
