Answer:
The unit rate in miles per hour = <em>1.4 miles/hr</em>
Step-by-step explanation:
Given that:
Distance walked by Boardman family = Two over five of a mile = 
Time taken by Boardman family = Two over seven of an hour = 
To find:
The unit rate in the miles per hour = ?
Solution:
Formula for the rate or the speed can be given as:

Putting the values:

So, the unit rate in miles per hour = <em>1.4 miles/hr</em>
The prime factor of the 576 is
and the prime factor of the 64 is
. And the expression
is equal to 3.
<h3>What is simplification?</h3>
Simplification is to make something easier to do or understand and to make something less complicated.
Given
The expression is 
The prime factor of the 576 will be

The prime factor of the 64 will be

Then the expression will be

More about the simplification link is given below.
brainly.com/question/12616840
the second slide is A. 22
and the last one is x=81 z=99 and y=68
hope this helps
Answer:
1.d 2 a,d
Step-by-step explanation: