I hope this helps! You can use Math-way or Desmos for these types of questions.
Answer:
-17x³-10x²+x+9
Step-by-step explanation:
(5x³+4x²+6x-3)+(-2x³+3x²-7x+9)-(5x+3)(4x²+x-1)
(5x³+4x²+6x-3)+(-2x³+3x²-7x+9)-(20x³+5x²-5x+12x²+3x-3)
(3x³+7x²-x+6)-(20x³+17x²-2x-3)
-17x³-10x²+x+9
As we see from the diagram, in order:- side - angle - side are equal
So its SAS
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Answer:
82.5
Step-by-step explanation:
the mean and standard deviation of the data is 82.5