Answer:
128mm
Step-by-step explanation:
Given


Required
Determine the length of the openings of the pipe
To do this, we simply add 40mm to the length of the pipe.
This gives:


<em>Hence, the opening must be 128mm</em>
Answer : 46°
These two angles have the same measure because they are alternate interior angles.
Y=3/4x-3 because none of the others make sense
1st one I would guess survey 2nd the answer is 64
(28 * x) -42 = 154
28x - 42 = 154
28x = 196
the unknown number is 7