You scored 90, 95 and 87 on three test. Write and solve an Equation to find the score on the fourth test so that your mean test is 90.

a: 1/6, j: 1/4

step-by-step explanation: you are welcome

the answer is:

the answer is:

to solve the problem, we need to remember the quotient of power property, it's defined by the following relation:

if we have a quotienf of powers that have the same base, we need to keep the same base and subtract the exponent of the denominator power to the exponent of the numerator power.

so, we are given the expression:

then, calculating we have:

hence, the answer is:

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