Answer:
Hello! answer: x = 19
Step-by-step explanation:
This is a supplementary angle! So it will add up to 180 degrees 180 - 123 = 57 so we know something multiplied by 3 will equal 57 and 19 × 3 = 57 so x = 19 Hope this is a good explanation!
The additive inverse of a complex z is a complex number

so that

Finding

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Tags: <em>complex number additive inverse opposite algebra</em>
Answer:
Answer is 9.
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we have given an expression
.
we have given the value of x,y and m .
.
we need to find the value of expression mx-y.
we need to plug the respective values and solve.
.
7 is the value of expression mx-y.
C. Plumber A and Plumber B will both charge $135 if they each work 2.5 h.