Algebra Homework Help : Subject of the Formula

Change the subject of the formula as indicated.
Type the new formula in the input box. Leave no spaces when typing the answer.
Since there are multiple ways of writing an answer, it is possible the computer may mark a correct answer wrong.
So, please always check the answer and explanation.
SEVERAL OF THE FORMULAE BELOW ARE WELL-KNOWN AND WORTH REMEMBERING.

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1.
S=C+P, make P the subject of the formula.

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2.
rt=100(A/P-1), make A the subject of the formula.

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3.
s=ut+0.5at², make u the subject of the formula.

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4.
A=ab/2, make b the subject of the formula.

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5.
s=A/180+2, make A the subject of the formula.

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6.
1/f=1/u+1/v, make f the subject of the formula.

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7.
P=3a, make a the subject of the formula.

Hint

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