A). The second one and the fourth one combined make the object ( a )
B). First one and the last one combined make the object ( b )
C). First one and the third one combined make the object ( c )
All angles would have a sum of 180 degrees, so 180-140 is 40. And if you divide 40 by 2, the two side angles will be 20 degrees.
48 books divided by 7 books per box. So since 7 can go into 48 6 times to make 42, the remainder is 6 books are left out. 6 boxes are filled. I interpreted the remainder by subtracting 42 from 48. And that's all I did. :)
I hope you like this answer and have a good night! :D
the domain: no real numbers so its negative infinity, positive infinity
Answer:
theoretical is first then experimental
Step-by-step explanation: