Answer:
Step-by-step explanation:
Given as :
The distance cover while running = 
= 5 miles
Let The speed for running = 
The distance cover with bike = 
= 80 miles
The speed for biking = 
= 15 mph +
Total Time taken = 5 hours
Now Time = 
∴ 5 hour = 
+ 
Or, 5 hour = 
+ 
Or, 5 hour = 
or, 5 × (
) = 
Or, 
- 
= 0
or, 
= 0
or, 
= 0
Or, 
= 0
Or, 
= 0
Or, 
= 0
∴ = 3 , - 5
So, the running speed = 3 mile per hour
And the biking speed = 15 mph + 3 mph = 18 mile per hour
Hence The running speed of Stu is 3 mile per hour . Answer
Answer:
B
Step-by-step explanation:
because it is
Answer:
Valid
Step-by-step explanation:
3(x-4)=x+4 <em>Given</em>
3x-12=x+4 <em>Distribute</em>
2x=16<em> Subtract x from both sides and add 12 to both sides</em>
x=8 <em>Divide each side by 2.</em>
<em> </em>
<em />
A reasonable estimate would be 3 feet
Step-by-step explanation:
8x + 14y = 4 ...1
-6x - 7y = -10 ...2
...2 × 2 in 2 sides of the equation
-12x -14y = -20 ...3
...1 + ...3
8x + 14y +(-12x -14y) = 4 +(-20)
8x + 14y - 12x -14y = 4 - 20
-4x = -16
x = (-16)/(-4)
= 4
replace x in ...1 or ...2 you will reserve y value
and answer in the term of (x,y)
