x-4 needs to be greater or equal to zero so
[4, ∞) is the answer
Answer:
Step-by-step explanation:
Given
--- The variation
Required
Determine the constant of proportionality (k)
Express as an equation
Multiply both sides by 
Make k the subject
Given that:
We have:
This can be represented as:
Answer:
4,0
Step-by-step explanation:
The Y-intercept is always a number then a zero
Answer:
28 km per hour
Step-by-step explanation:
First determine the amount of time that the trip took
17:55 - 17:40 = :15 or 15 minutes
We need the time in hours
15 minutes * 1 hour/ 60 minutes = 15/60 hours = 1/4 hours
To determine speed, take distance and divide by time
7 km ÷( 1/4 hours)
Copy dot flip
7 * 4/1
28 km per hour
Answer:
88.5
Step-by-step explanation:
(90+82+81+2x)/5=86
90+82+81+2x=430
2x=177
x=88.5
