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Choose the correct simplification of the expression 4 over y to the power of negative 3.

A)

B) 4 over y to the 3rd power

C) to the 3rd power over 4

D) This expression is already simplified.

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Patrick Cosico
Patrick CosicoLv9
24 Nov 2020

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Which of the following is an equivalent expression for tan to the power of minus 1 end exponent x plus tan to the power of minus 1 end exponent left parenthesis minus x right parenthesis

tan^-1x+tan^-1(-x)

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i know you need to use the equation for finding the gradiant of aline in part (i), which would be:

(y2 - y1) / (x2 - x1)
substituing values: (7-3) / (-7-5) = 4/-12 = -1/3

so the gradient is y = -1/3x + c

the higher the number multiplied by x the steeper the gradient,however this is a small number which should give a less steepgradient.

My problem is how to find the 3rd point, part (ii). I know that youhave to use the equation for a straight line, y = -1/3x + c,however, when i find my 3rd point the line is quiet steep which itshouldnt be because every y value should be -1/3 of every xvalue

When the expression 3/8rv - v + 4/r2 is combined into a single simplified fraction, the numerator is equal to:

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