Answer:
The Commutative property states that order does not matter. Multiplication and addition are commutative.
Step-by-step explanation:
4 + 2 = 2 + 4
5 + 3 + 2 = 5 + 2 + 3
b + a = a + b
Answer: 
<u>Step-by-step explanation:</u>
Pythagorean Theorem is: a² + b² = c² , <em>where "c" is the hypotenuse</em>
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Note: 4² + (8√2)² = hypotenuse² → hypotenuse = 12

Note: 12² + opposite² = 20² → opposite = 16

Note: adjacent² + 5² = 6² → adjacent = √11

Note: adjacent² + 7² = (13√2)² → adjacent = 17
Im pretty sure its 4,771 but id double check with a calculator
Answer:
Step-by-step explanation:
perp. -5
y + 7 = -5(x - 4)
y + 7 = -5x + 20
y = -5x + 13