Answer:
Z=1
Step-by-step explanation:
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Regardless of the sign of

, we have

(never negative). But multiplying by -1 makes it negative.
On the other hand,

which can never be negative for real

.
Step-by-step explanation:
Divide 140 by
to represent the amount of hours he worked.
To make dividing easier,
can also represent 2.8 as a decimal.

He has worked 50 hours after completing 140 rows of grapes.
I used Desmos to graph it but here are the coordinates used to graph it in the pictures below.
Answer:
45 degrees
Step-by-step explanation:
When the angle is rotated, it does not change how many degrees the actual angle is