T = k/R where k is the constant of variation, T=time and R=speed.
Plug in the given values:-
12 = k/60
k = 12*60 = 720
So the equation of variation is T = 720/R
At 85 mph we have
T = 720 / 85 = 8.47 hours (answer)
I think he pays $702.
Basically,
650 • .08 (move the decimal over two to the left, that’s what you get) = 52. Then I did 650 + 52 and got $702.
3 3/4 inches = (3 3/4 / 12) feet = 0.3125 feet
120 feet requires ------- x number of board.
120 feet/0.3125 feet / board = 384 boards.
1 board costs 1.40
384 boards cost x
1.4 * 384.00= x*1 = x
537.60 dollars.
Note if you need to do this by dimensional analysis, it will look like this.
120 feet/fence [ 1 board / 3.75 inches] [ 12 inches/foot] [1.40 dollars / board]
All units that can be cancelled should be.
The result is 537.6 dollars / fence which is the answer you got.
The point slope form:

We need to find the slope. To find the slope we can use the following formula:

Use the points <span>(-5, 6) and (0, 1) and plug it into our slope formula and solve:
</span>


So our slope is -1 which means m = slope = -1
Now that we have our slope lets create the point slope form
Our point slope form equation is

Remember
m = slope = -1. Also, we are going to use the point (-5,6).
First insert the m = slope = -1 number where m is located

Next, insert the -5 from (-5,6) where

is located and the 6 from (-5,6) where

is located.


Now simplify


<-------Answer
Answer:
Divide both the numerator and denominator by the GCD
Step-by-step explanation: