Step-by-step explanation:
here is your answer.is it helpful or not,?
In order to find the y-intercept you have to plug in 0 for x in the equation, so:
f(0) = -1.4(0) - 15
When you solve, you would get y-intercept = -15
In order to find the x-intercept you have to set the equation equal to 0, so:
0 = -1.4x - 15
Solve for x and you would get -10.714...
f(15) = -1.4(15) - 15
f(15) = -36
-1.4x - 15 = 12.44
Add 15 to both sides
-1.4x = 27.44
Divide both sides by -1.4
x = -19.6
Answer:
90 minutes
Step-by-step explanation:
42 min is to 70 km what x is to 150 km
42/70 = x/150 (cross multiply)
(42 * 150) / 70 = 90
Answer:
4050 sq. feet.
Step-by-step explanation:
Fencing is done on three sides of the rectangular area.
Given that there are 180 feet of fence available.
Then 2L + W = 180 ........(1), where L = length and W = width, of the rectangular plot.
Now, the area of the plot is given by A = LW
Now, from equation (1), we ger A = L (180 - 2L) ..... (2)
Then differentiating with respect to L in the both sides we get,
{Since condition for Area to be maximum is
}
⇒ L = 45 feet.
Now, from equation (2), we have
square feet.
65%
There are only 7 numbers that don't fit this criteria. Therefore, there are 13 that do. 13/20 = .65*100 = 65%