Find a rational number and an irrational number that are between 7.7 and 7.9. Include the decimal approximation of the irrational number to the nearest hundredth. (two to three sentences)

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A rational number is a number that can be expressed as a ratio of 2 numbers.

78/10 = 39/5 = 0.78 represents a rational number between 7.7 and 7.9.

39/5

An irrational number is a number that can not be shown as a ratio of 2 numbers.

Let π*x = 7.8

Next,  x = 7.8/π = 2.483

Then 2.5*π = 7.854 lies between 7.7 and 7.9

7.85 (nearest hundredth) 

This number is approximately equal to 2.5π, so it is irrational because π is an irrational number.

The actual value of 2.5π is 7.8539816 ...

7 ft 6 in means 7 1/2, because 6 in is 1/2 of a foot. 7 ft 8 in means 7 2/3 because 8 in is 2/3 of a foot. 23/3 = 7 2/3. 15/2 = 7 1/2.

23/3   *   15/2   = 57 1/2

step-by-step explanation:

7.25

step-by-step explanation:

we know that 7 equals to 7.0. we also know that 1/4=0.25. so we can add the two together and we get 7.25