Evaluate the expression for the given value of x.4x+9 for x =9

Mathematics

2 answers:

Neko [114]1 year ago

6 0

since x=9 plug in 9 into the equation to get

4(9)+9

multiply 4(9) to get

Then add 9

which then equals 45

Wittaler [7]1 year ago

5 0

Answer:

answer is 45

Step-by-step explanation:

4×9=36

36+9=45

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ANTONII [103]

Megan:
x to the one third power = $x ^{1/3}$
x to the one twelfth power = $x ^{1/12}$

The quantity of x to the one third power, over x to the one twelfth power is:
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Since $\frac{ x^{a} }{ x^{b} } = x ^{a-b}$
then $\frac{x ^{1/3}}{x ^{1/12}} = x^{1/3-1/12}$

Now, just subtract exponents:
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$\frac{x ^{1/3}}{x ^{1/12}} = x^{1/3-1/12} = x^{1/4}$

Julie:
x times x to the second times x to the fifth = x * x² * x⁵

The thirty second root of the quantity of x times x to the second times x to the fifth is
 $\sqrt[32]{x* x^{2} * x^{5} }$

Since $x^{a}* x^{b}= x^{a+b}$
Then $\sqrt[32]{x* x^{2} * x^{5} }= \sqrt[32]{ x^{1+2+5} } =\sqrt[32]{ x^{8} }$

Since $\sqrt[n]{x^{m}} = x^{m/n} }$
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Since both Megan and Julie got the same result, it can be concluded that their expressions are equivalent.

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