Margaret has completed 22 questions of an online survey which represents 55% of the total survey. How many questions are on the survey? QUICK HELP!

18 questions

Step-by-step explanation:

22 questions=55%

??? questions=45%

now what about this:

2 questions=5%

I just simplified the first equation

now 5%*???=45%

5*9=45

then we do the same thing to the other side

2*9 questions=45%

18 questions are left on the survey

for this case we have by definition, if two lines are perpendicular, then the product of their slopes is -1.

then, given the following line:

so,

we are looking for m_ {2}:

then, the line is given by:

we find "b" replacing the given point:

finally, the equation is:

option c