We add them up to find the total distance :

$\dfrac{4}{10} + \dfrac{4}{10} = \dfrac{8}{10} = \dfrac{4 \times 2}{5 \times 2} = \dfrac{4}{5}$

$\text {She walked } \dfrac{4}{5} \text { miles}$

7 0

3 years ago

Is the simplified form of 2 square root of 3 − 2 square root of 3 rational? (1 point)

postnew [5]

<h2>Answer:</h2><h2>Yes, the simplified form of 2 square root of 3 − 2 square root of 3 is rational.</h2>

Step-by-step explanation:

The given expression is $2 \sqrt{3} - 2 \sqrt{3}$

After performing the subtraction operation, the result is 0 as the terms are equal and opposite in sign, they cancel each other.

Rational numbers are those which can be expressed in the form of fractions, decimals, e.t.c

Since 0 can be expressed as a fraction, it is a rational number.

For eg: $\frac{0}{2}$ = 0,

Hence the result of the given expression is a rational number.

7 0

4 years ago