The number property that will justify the step in the following expression. 2(5 • 17) = (2 • 5) 17 = 10 • 17 = 170 is; Associative Property
The associative property is a math rule that says that the way in which factors are grouped in a multiplication problem does not change the product.
Now, this associative property is used here because we see that;
2(5 • 17) = (2 • 5) 17
In both left and right hand sides we see that despite the change in order, the result remains the same.
Read more about Number Property at; brainly.com/question/24792133
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Answer:
67.2mph
Step-by-step explanation: you do 168 divide by 2.5
8.3
Step-by-step explanation:use law of cosine
solve equation
substitute
simplify
67.5
Step-by-step explanation:
If your triangle's base is 15, and your height is 9, then the area is 67.5