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3 years ago

3. If 4x = 28, find the value of 29 - 5x *1-6O Ο Ο6- 1

Mathematics

1 answer:

Anna35 [415]3 years ago

8 0

Since 4x=28,
x = 28/4 = 7
sub. x = 7 into the eqn,
29-5x = 29-5(7) = 29-35 = -6

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Which function below is the inverse of f(x)= 3x+5/7

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Answer:

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Step-by-step explanation:

Given the function:

$f(x) = \frac{3x+5}{7}$

Put f(x) = y

$y = \frac{3x+5}{7}$

Interchange x and y

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Solve for y

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Multiplying both sides by 7

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Subtracting y to both sides

$7x-5 = 3y$

Dividing both sides by 3

$\frac{7x-5}{3} = y$

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Put y = $f^{-1}(x)$

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$f^{-1}(x) = \frac{7x-5}{3}$

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Step-by-step explanation:

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Given:

$3\left[\begin{array}{c c}-1 & 2 \\4 & 8\end{array}\right]=\dfrac{2}{3}m \times \left[\begin{array}{c c}-1 & 2 \\4 & 8\end{array}\right]$

Therefore:

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