Answer:
k=-20
Step-by-step explanation:
-12k=240
k=-20
y=2x+3
to find inverse swap x and y
x=2y+3
x-3=2y
y=(x-3)/2
y=(x/2)-(3/2)
The inverse is f^-1(x)=(x/2)-(3/2)
Hope it helps!
The answer to this is 150.
Answer:
C
Step-by-step explanation:
Quadratic formula is used only to solve the quadratic equations .
Means the equation of the form
In this the x^2 part is must because that only makes the equation a quadratic.
Looking at the four options given to you , only the option C has the missing x^2 term, which makes it a linear equation and hence the quadratic formula cannot be applied there .
So the right option for your question with the quadratic formula is
option
C
Answer: if S is the distance, the fact that the distance is proportional to the square of the time means that S(t) = a* where a is a constant of proportionality, with units of .
We know that S(1) = 16 feet = a*1, then a = 16
then S(2) = 16*4 feet = 64.
and if we want to know in how much time te objet will fall 400feet, then S(t₀) = 400 feet = 16*
so t₀ = = 5s.