2x^2−5xy+y^2 - (x^2+4xy −3y^2)
= 2x^2−5xy + y^2 - x^2 - 4xy + 3y^2
= x^2 - 9xy + 4y^2
answer
x^2 - 9xy + 4y^2
Answer:
In general, time is not a function of temperature, but this could depend on the problem you're solving. For example, imagine a ball of metal cooling down, and data was given on how long the ball was cooling down and the temperature at the center. Someone could have fit a curve or function to the temperature to show how much time has elapsed when inputting temperature as the independent variable.
Step-by-step explanation:
Answer:
27. C
28. D
Step-by-step explanation:
The average of all grades in his fencing class, including the upcoming one, (all grades summed up divided by the amount of grades) must be equal to 86 (percent), hence C is the right answer for 27.
Solving this equation gives:

So D is the right answer for 28.
Answer: -3
f(0)=2•0-3
f(x)=-3
Esta es la respuesta
1.572x100x
157.2x