Answer:
-36/7
Step-by-step explanation:
-4/7 x 9
-4 x 9/ 7
That’s how I got -36/7
We know that the profit from an item is the sale price minus the cost price. Thus,
1269 - 0.2x² - 830 - 398x
P(x) = -0.2x² - 398x + 439
Local maxima are located at the points where the first derivative of a function are 0
P'(x) = -0.4x - 398
398 = -0.4x
x = -995
There is only one maximum so the average value is -995
Answer:
4:16 or 1:4
Step-by-step explanation:
1/5 of 20 = 4
there are 4 red marbles
there are 16 blue marbles
4:16 or 1:4
Answer:
$2.50
Step-by-step explanation:
This problem is asking for the unit rate. To solve this problem, you would do $12.50 divided by 5 to get $2.50.
$12.50 divided by 5 = $2.50
Answer:
The equation of this line would be y = 3x - 1
Step-by-step explanation:
In order to find this equation we must first find the slope of the original line. The original slope (the coefficient of x) is 3, which means the new slope will also be 3 because parallel lines have the same slope. Now, we can use this slope along with the point in point-slope form to find the equation of the line.
y - y1 = m(x - x1)
y + 7 = 3(x + 2)
y + 7 = 3x + 6
y = 3x - 1
