D is the correct answer I think.
Answer:
Number 4, the last one
Step-by-step explanation:
We know that
if <span>(ax + b)(cx - d) = 0
then
</span><span>(ax + b)= 0-----> ax=-b------> x=-b/a
and
</span><span>(cx - d) = 0-----> cx=d------> x=d/c
therefore
the answer is the option
</span><span>C. -\frac{b}{a}</span>
Answer:
130
All of the angles on a triangle add up to 180 degrees.
Answer:
1,2,3
18=8×1 =
Step-by-step explanation:
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