Answer:
103 - 225
Step-by-step explanation:
you just add 68 and 35 to get 103 and then minus it with 225
Answer:
the answer is 4
Step-by-step explanation:
you divide -4 to both sides and 16 divided by -4 is 4
Answer:

Step-by-step explanation:
<h3>Trigonometry:</h3>


Answer:
= -3i + (3/4+2i) - (9/3+3i)
= (3/4 - 9/3) + (-3 + 2 -3)i
= -9/4 -4i
The given equation is: 
To find the line perpendicular to it, we interchange coefficients and switch the signs of one coefficient.
The equation to a line perpendicular to it is:
$ 2y-x=c$
where, $c$ is some constant we have determine using the condition given.
It passes through $(2,-1)$
Put the point in our equation:
$2(-1)-(2)=c$
$c=-2-2$
$c=-4$
The final equation is:
$\boxed{ 2y-x=-4}$