Answer:
Courtney's walking speed = 3.33mph
Brandi's walking speed = 4.33 mph
Step-by-step explanation:
Let x = Courtney's walking speed
then
(x + 1) = Brandi's walking speed
:
Time = Distance/speed
Brandi walks 6.5 mi time = Courtney walks 5 mi time
6.5/x + 1 = 5/x
Cross multiply
6.5x= 5(x+1)
6.5x= 5x + 5
6.5x - 5x = 5
1.5x = 5
x = 5/1.5
x = 3.33 mph is Courtney's walking speed
Note that:
(x + 1) = Brandi's walking speed
3.33mph + 1 = 4.33mph
Therefore,
Courtney's walking speed = 3.33mph
Brandi's walking speed = 4.33 mph
Answer:
The slope is 2.5 and the y-intercept is 15.
Step-by-step explanation:
The slope is 2.5 and the y-intercept is 15.
m= slope
b= y-intercept
Any answer less than one would work, soothe answers are A and D
Answer:
y I z
Step-by-step explanation:
We can see that y I b and z I b we can conclude also that
y I z.
Answer:
-170 / 10
Step-by-step explanation:
