Answer:
3x - 8 = 2x + 12
(vertical angles)
x = 20
A straight line = 180 degrees,
so 3(20)-8=52
52+128 = 180
so y is 128.
The volume as a function of the location of that vertex is
... v(x, y, z) = x·y·z = x·y·(100-x²-y²)
This function is symmetrical in x and y, so will be a maximum when x=y. That is, you wish to maximize the function
... v(x) = x²(100 -2x²) = 2x²(50-x²)
This is a quadratic in x² that has zeros at x²=0 and x²=50. It will have a maximum halfway between those zeros, at x²=25. That maximum volume is
... v(5) = 2·25·(50-25) = 1250
The maximum volume of the box is 1250 cubic units.
Answer:
Step-by-step explanation:
Is 8ft
Answer:

Step-by-step explanation:
Given
Variation: Directly Proportional
Insects = 10 million when Rate = 2 million
i.e.
when 
Required
Determine the differential equation for the scenario
The variation can be represented as:

Which means that the rate at which the insects increase with time is directly proportional to the number of insects
Convert to equation


Substitute values for
and P

Make k the subject



Substitute
for k in 


Multiply the first bracket by -4. Multiply the second bracket by -2
-8x+12y+4x-2x-12
Negative and Negative = Positive
Negative and Positive = Negative
Then do -8x+4x-2x
= -6x+12y-12
Answer is D. -6x+12y-12