<u>Step 1: Assign variable for the unknown that you need to find. </u>
Let ' t ' be the number of hours it took for the pedestrians to meet.
<u>Step 2: List the give details</u>
Speed of first pedestrian = 4 km/hr.
Speed of second pedestrian = 6 km/hr.
Distance between two pedestrians = 27 km.
<u>Step 3: Set up an equation</u>
The relationship between speed, distance and time is given below:

The first one walked 4 km per hour, distance traveled by first pedestrian is given below:

Two pedestrians simultaneously left two villages 27 km apart and walked toward each other.

Conclusion:
The pedestrian meet after 2.7 hours.
50 girls attended the trip.
80 boy + 50 girls = 130 total students
8x10 =80
5x10=50
multiply both by 10.
Given:
The expression is

To find:
The error in Frankie's work.
Solution:
We need to simplify
, so


and,


Now,





Therefore, there is error in Frankie's last step. In that step, he did not subtract the mixed fraction correctly.
Answer:
Step-by-step explanation:
Since they are adjacent the sum of the angles must equal 180 degrees.
17x+4+2x+5=180
19x+9=180
19x=171
x=9 making 17x+4=17(9)+4=157 degrees and 2x+5=2(9)+5=23 degrees
So the two angles are 23 and 157