Four times a number is 4 more than two times the number. What is the number

1 answer:

3 0

Four times a number = 4x

Is = equal sign

4 more than 2 times a number= 4+2x

So,

4x=4+2x is the equation
2x=4 subtract two from each side
X=2 divide each side by two

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(3x^-7 yz^-3)(3x)^-4

Alex

Answer:

The step wise solution is shown below:

Step-by-step explanation:

$(3x^{-7} y z^{-3} ) (3x)^{-4}$

= $(3x^{-7} (3x)^{-4} y z^{-3} )$

= $3^{1-4} x^{-7-4} y z^{-3}$

= $3^{-3} x^{-11} yz^{-3}$

= $\frac{y}{3^{3} x^{11}z^{3} }$

= $\frac{y}{27 x^{11}z^{3} }$

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3 years ago

What is the domain and range for the following function and its inverse f(x) = x2 – 2

Andreas93 [3]

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The domain is from -∞ to +∞, while the range is from -2 to +∞.