Answer:12 I believe
Step-by-step explanation:
Distance = rate*time
Let v be speed of person walking.
6t + vt = 51
vt = 7
Solve for t:
6t + 7 = 51
t = 44/6 = 22/3
Sub in to find v:
v(22/3) = 7
v = 21/22
The speed a person walks is 21/22 ft/sec
Answer: The difference in temperature is -44 degrees.
Explanation: Since the new temperature is a negative number and the old was positive, you add them together. However instead of (-5) +39 (which the answer would be 35), you would write 5 +39 because -5 is 5 spaces away from 0. You can also check by using the equation 39 -44. You would get the answer -5, proving that the answer is indeed -44 degrees.
