The ratio of 9 and 30 is 3:10 when simplified
C) 3, 4, 5
any triangle with that ratio will make a right triangle
Answer:
Try the 2nd one
Step-by-step explanation:
Hello,
well done.
As x^3-7x²-9x+63=(x-3)(x+3)(x-7) we must have x>3 and x>-3 and x>7 thus x>7
Explanations:
x^3-7x²-9x+63=x^3-9x+(-7x²+63)=x(x²-9)-7(x²-9)=(x²-9)(x-7)=(x+3)(x-3)(x-7)