Answer:
a) 66 degrees
b) 32 degrees
Step-by-step explanation:
a) 90+24
=114
180-114
=66 degrees
b) 180-51= 129
x= 129+19
148
180-148
= 32
mark me brainliestt :)) i worked hard
Answer:
22/40 or 11/20
Step-by-step explanation:
12 + 10 + 18 = 40
12+ 10 = 22
Answer:
d
Step-by-step explanation:
if she connects it to any other point angle would be more the 30 degree
I think you have to add it or multiply it. I’m not sure
Answer:
Dave worked 60 hours.
Step-by-step explanation:
Let's assume that Dave worked a total of
hours.
Since Kate worked 5 hours less than Dave: 
And Sarah worked 10 more hours than Dave: 
Combined, the three siblings worked 185 hours.

Dave worked 60 hours,
Kate worked 55 hours and Sarah worked 70 hours.
To check:
55 + 60 + 70 = 185 hours