Answer:
x^2-9x+20
Step-by-step explanation:
I used M a t h w a y to get your answer. It just gives the answer, so there's no step-by-step explanation unless you have a premium account (I don't).
Hope this helps!
We can see that as the number of hours increase the charge also increase
Let x be the number of hours
The function denoting the scenario for Celeste
f(x)=
The function denoting the scenario for Dora
g(x) =
Now we need to know the time or number of hours x, when both the functions will give us the same value , that is f(x)=g(x)
x=7
Hence at 7 hours of instruction both the instructors will get the same cost
Answer:
50 guitar strings per day
Step-by-step explanation:
450- (30x5) (30 strings per day times 5 days)
450-150 (simplify)
300 (answer)
300 divided by 6 (he has 300 strings and only 6 days)
50 (answer)
Answer:
See the step-by-step explanation
Step-by-step explanation:
Let c be any element of C. (I'm not sure wether you have to assume that C is non-empt or not)
C is a subset of B. That means that as c is in C, it is also in B. ()
Now, B is a subset of A. It follows that as .
That means c is an element of A. The predicate Q is true for all elements of A, including c.
Because we let c be any element of C, we have proven that the predicate Q is true for all elements in C.
Answer:
A.
Step-by-step explanation:
Because A,B,C goes in order in the alphabet