How to solve 3a+9 and a²-9 i have to find h.c.f
1 answer:
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Answer:
y = 3
Step-by-step explanation:
The 2 right triangles inside the right triangle are similar, then ratios of corresponding sides are equal, that is
=
( cross- multiply )
y² = 63 ( take the square root of both sides )
y = = 3