The value of 5 is 10 because it is in the tens place. If you draw a place value chart it shows that 5 is in the tens place. You could also draw it with 5 blocks with ten cubes.
Happy studying ^_^
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Substitute x=7 in the equation:
2+7-2•7= 2+7-14= 2-7= -5
The length is gonna be 89 ft
72+72+89+89=322 ft
An interval is a set of numbers and the interval;s are the numbers in between (1-4) --- 2,3
