Answer:
Q17: 160=4b+40
Q18: <u>-40</u> <u>-40</u>
Q19: 120=4b
Q20: /4 /4
Q21: 30=b
Q22: leave b blank
Q23:b = 30
Step-by-step explanation:
your welcome :) have a nice day
Answer:
c. supplementary angles
Step-by-step explanation:
Answer: 
<u>Step-by-step explanation:</u>

NOTE: Neither the Trapezoidal Rule or Reimann Sums can be used without the number of rectangles (n) you are separating the interval into. Besides, they only provide an estimate. If you want the EXACT area, you must use integration.
Answer:
7
Step-by-step explanation:
The angles that we are sure about is 33 and 90. The angles of a triangle add up to 180. 33 + 90 = 123. 180 - 123 = 57. 57 = 7x+8, 49 = 7x, x = 7.
0.5 unit per unit (or any other label)