Answer:
D A perpendicular to a given line at a point on the line
If the divisor is not a whole number, move decimal point to right to make it a whole number and move decimal point in dividend the same number of places.
Divide as usual. ...
Put decimal point directly above decimal point in the dividend.
Check your answer.
7 = a/2 + 4
first subtract 4 from both sides
7 (-4) = a/2 +4 (-4)
3 = a/2
Then isolate a by multiplying 2 to both sides
3(2) = a/2 x 2
6 = a
a = 6
hope this helps