90. Add the zero in front of the 9.
Answer:
<h3>
126°</h3>
Step-by-step explanation:
given <abd = 48 and <dbc = 78, hence the addition rule is true<abc = <abd + < dbc
Substituting the given values inti the formula;
< abc = 48+78
< abc = 126°
The measure of angle abc is therefore 126°
Step-by-step explanation:
1=78°
3= 78°
4= 360°- 78° - 78°
= 204° ÷ 2
= 102°
2= 102°
Note that 1+2+3+4=360°
180° - (4)
= 180° - 102°
= 78° ÷ 2
= 39°
ans; angle ACD is 39°
It would take him 40 weeks.
Hope this helps!!