To get the inverse "relation" of an expression, we first off, do a quick switcharoo of the variables, and then solve for "y", so let's proceed,
and yes, the domain for the range 0 ⩽ x
<span>⩽ 2, let's get instead the "range" of the original function,
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Answer:
None
Step-by-step explanation:
The discriminant of a quadratic equation is . In this case, that is:
Since the discriminant is negative, the square root will be a complex number, and this equation must have no real solutions. Hope this helps!
Maximum can be determined by taking derivative and set it equal to zero.
Answer:
m+n should replace the question mark
Step-by-step explanation:
m+m = 2m
-n+n=0
Answer:
Step-by-step explanation:
Let's call Joseph "J", Mark "M", and Kevin "K" for ease. We need a system of equations to solve this, 3 equations for 3 unknowns. The first equation is
J + M = 230. The second equation is
J + K = 130. The third equation is
M = 3K. Sub that 3K into the first equation and get
J + 3K = 230. Now take th second equation and solve it for J:
J = 130 - K. Now sub 130 - K into the re-written first equation to get a whole new equation in terms of K only:
130 - K + 3K = 230 and
2K = 100 so
K = 50
Kevin has $50