3 apples cost $1.26. How much do 10 apples cost?
1 answer:
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The solution of the given equation is (3,6). The correct option is B.(3,6)
<h3>Given equations,</h3>putting the value of y from equation (1) in equation (2) , we get
substitute the value of x=3 in equation (1) we get,
Hence, the solution of given equation is (3,6).
So, the correct option is B.
For more details about the system of equations, follow the link:
Note that 125 = 5³. Make use of the factorization of the sum of cubes:
a³ +b³ = (a+b)(a² -ab +b²) . . . . . . a formula worth keeping handy
Then ...
_____
When x=-5, this evaluates to
... (-5)²-5(-5) +25 = 75