Answer:
(x, y, z) = (2, -1, 3)
Step-by-step explanation:
I solved it using the elimination method
Answer:
f(-3) = 7
Step-by-step explanation:
For these types of questions, you need to replace the x's in the equation with whatever is inside f(x)
So if its f(5) you would sub 5 into where all the x's are
You multiply the whole number (19) by the denominator (5) before adding the numerator (4). The answer then becomes the numerator.
(19 x 5) = 95
95 + 4 = 99/5
Answer:
50 black keys
Step-by-step explanation:
for every set of 7 white keys there are 5 black keys
72/7 = 10
so there is a total of 10 full sets of keys
then you have 2 white keys remaining but that doesn't matter because they will just be on the dies and already have a black key next
so this means that you only have to calculate the number of 10 sets of black keys and thats 5 x 10.
hope this helps : )
