3 years ago

Use the grid to create a model to solve the percent problem.

1 answer:

6 0

For this case we can make the following rule of three:
21 ------> 70%
x --------> 100%
Clearing x we have:
x = (100/70) * (21)
Rewriting we have:
x = (10/7) * (21)
x = 30
Thus,
21 is 70% of 30
Answer:
21 is 70% of 30

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The given expression written in the simplest rational exponent form is $x^{\frac{3}{4} }$

<h3>Writing an Expression in Exponent form</h3>

From the question, we are to write the given expression in exponent form

The given expression is

$\sqrt{x} \times \sqrt[4]{x}$

In exponent form,

$\sqrt{x} = x^{\frac{1}{2} }$

and

$\sqrt[4]{x} = x^{\frac{1}{4} }$

Thus, $\sqrt{x} \times \sqrt[4]{x}$ becomes

$x^{\frac{1}{2} } \times x^{\frac{1}{4} }$

Applying the multiplication law of indices, we get

$x^{\frac{1}{2} + \frac{1}{4} }$

= $x^{\frac{3}{4} }$

Hence, the given expression written in the simplest rational exponent form is $x^{\frac{3}{4} }$

Learn more on Writing an expression in exponent form here: brainly.com/question/4421494

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