Answer:
-5
Step-by-step explanation:
-9+x = -14
Add 9 to each side
-9+x+9 = -14+9
x = -5
Its d) f(x)= 300+50x/2+x..............................................................................
Please note that your x^3/4 is ambiguous. Did you mean (x^3) divided by 4
or did you mean x to the power (3/4)? I will assume you meant the first, not the second. Please use the "^" symbol to denote exponentiation.
If we have a function f(x) and its derivative f'(x), and a particular x value (c) at which to begin, then the linearization of the function f(x) is
f(x) approx. equal to [f '(c)]x + f(c)].
Here a = c = 81.
Thus, the linearization of the given function at a = c = 81 is
f(x) (approx. equal to) 3(81^2)/4 + [81^3]/4
Note that f '(c) is the slope of the line and is equal to (3/4)(81^2), and f(c) is the function value at x=c, or (81^3)/4.
What is the linearization of f(x) = (x^3)/4, if c = a = 81?
It will be f(x) (approx. equal to)
To find the distance per lap, divide the total feet, which is 5,280 by the number of laps which is 6. This means that 5280/6=880ft
Thus, Anne runs 880 feet per lap.
Should be 3 hrs. when the second train leaves,it is 60 miles away from the first train and the speed difference is 80-60=20MPH, so it takes 60/20 hrs to catch up
