f(x)=40
x=8
so if x=2 it would be 40/8 which is 5
I'm pretty sure the answer is 4 because, 4*21= 84.
Looks like the system is

We can eliminate
by taking




so that
, and



Substitute
into this last equation and solve for
:




Then



Plug these values into any one of the original equation to solve for
:




Hence the solution is x = 4, y = -3, and z = 2.
Answer:
hypotenuse = squareroot of 61 cm. which is approximately 7.81025 cm
Step-by-step explanation:
5 squared + 6 squared = hypotenuse squared
square root of (5 squared + 6 squared)= hypotenuse