Hey there!
(3x)^2 - 2x^2
= (3(-2))^2 - 2(-2)^2
= -6^2 - 2(4)
= 36 - 8
= 28
Therefore, your answer is: 28
Good luck on your assignment and enjoy your day!
~Amphitrite1040:)
Answer:
<h3>C. t = x + x - 6</h3>
Step-by-step explanation:
Let the time use by other one technician be x
if the other technician takes 6 minutes less than the first technician, then the time taken by the other technician will (x - 6)
The total amount of time t it would take to run the tests if the technicians work together will be expressed by taking the sum of the time taken by the two technician as shown.
First technician = x
Second technician = x-6
Sum of the time taken
t = x+ (x-6)
Hence option C is correct
Answer:
I think the answer is D
Step-by-step explanation:
Answer:
4x^2 + 3/2x -7
Step-by-step explanation:
f(x) = x/2 -3
g(x) = 4x^2 +x -4
f(x) + g(x) = x/2 -3 + 4x^2 +x -4
Combine like terms
= 4x^2 + x/2+x -3-4
= 4x^2 + 3/2x -7
We first need dy/dx.
dy/dx = -2sin(x/2)(1/2)
dy/dx = -sin(x/2)
We now find d^2y/dx^2.
d^2y/dx^2 = -cos(x/2)(1/2)
d^2y/dx^2 = -(1/2)cos(x/2)
