A student earned a grade of 80% on a math test that had20 problems. How many problems on this test did the student answer correc
1 answer:
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Answer:
The set
Step-by-step explanation:
We separate the left and right side of the equation, to create two new equations:
(1)
(2).
and then to solve Tanisha's original equation, we find the solution to the system that we got above.
The first step in solving the above system of equations is to take the value for from equation(1), and substitute it into equation(2) which gives us:
which is the same equation that Tanisha set out to solve.