Answer:
x = -3 and x = 17
Step-by-step explanation:
x² - 51 = 14x
x² - 14x - 51 = 0
(x + 3)(x - 17) = 0
x = -3 and x = 17
The equation seems to be
1
-------- = 5 ^ (x + 4)
25
In that case, this is the solution, stept by step:
1) factor 25: 25 = 5^2
1
=> ----------- = 5^(x + 4)
5^2
2) invert 5^2
=> 5^(-2) = 5^(x+4)
3) Given that the bases are equal, the exponents also have to be equal:
=> - 2 = x + 4
3) transpose +4:
=> - 2 - 4 = x
=> x = - 6
Answer: - 6
First let's make both the miles and the hours ran improper fractions:

So, to find our miles per hour, we have to divide the miles by the hours to get: 
Answer:
76 unit
Step-by-step explanation:
because added the rectangle size and added the 60 with 16