<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.
Answer:
12
Step-by-step explanation:
84/7 is 12, so she was going 12 mph
Answer:
24
Step-by-step explanation:
Answers:
a) 
b) 
c) 
d) 
Step-by-step explanation:
In this case we are dealing with angles, which can be expressed in degrees (
) or radians (
).
Now, before making the conversions we have to know the equivalence between degrees and radians:

Taking this information into account, let's begin with the answers:
a) 
b) 
c) 
d) 
x=15,-1 would be the correct answer for this equation