The directions on a seed packet say to plant the seeds 178 inches apart. what is the decimal equivalent of this mixed number?

The decimal equivalent is 1.875

Assuming the mixed number is 1⁷/₈, you first need to convert it to an improper fraction before you can covert it to a decimal.

As an improper fraction it is:

= ((Denominator * whole number) + numerator ) / denominator

= ((8 * 1) + 7) / 8

= (8 + 7) / 8

= 15 / 8

Convert to decimal:

= 15 ÷ 8

= 1.875

Decimal equivalent is 1.875.

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1.875 inches apart

Step-by-step explanation:

I think you meant "1  7/8 inches."  

Convert 7/8 to a decimal fraction.  Divide 7 by 8 on a calculator; you will get 0.875.  Then:   1  7/8 inches = 1.875 inches.  

Plant the seeds 1.875 inches apart.