To convert the mixed number 1 7 into a decimal, we first need to convert the whole number and the fraction into a decimal separately.
The whole number part is simply 1. The fraction part is 7, which can be interpreted as 7/1 when assessing its decimal value. Since dividing 7 by 1 equals 7, we can express the whole number and the fraction in decimal form as follows:
1 (whole number) + 7 (fraction) = 1 + 7 = 8.
Therefore, the mixed number 1 7 is equal to 8.0 in decimal form.