Nigel is planning his training schedule for a marathon over a 4-day period. he is uncertain how many miles he will run on two days. one expression for the total miles he will run is 12+y+17+z. use the commutative property to write an equivalent expression.

or .

Step-by-step explanation:

We have been given that Nigel is planning his training schedule for a marathon over a 4-day period. He is uncertain how many miles he will run on two days. One expression for the total miles he will run is .

The Commutative Property of Addition states that we can add numbers in any order. For example a and b be two numbers.

According to Commutative Property of Addition .

Similarly, we can write an equivalent expression to our given expression as:

We can simplify our expression as:

.

Therefore, our required expression would be or .

answer: 1.06 km per sec

step-by-step explanation:

39.6 m=63.72 km

60 min in an hour so 63.72/60=1.06

answer: c

step-by-step explanation