18. Bentuk sederhana dari \( 4 \sqrt{ } 3-\sqrt{ } 12+\sqrt{ } 27 \) adalah .... A. \( 5 \sqrt{ } 3 \) B. \( 4 \sqrt{ } 3 \) C. \( 4 \sqrt{ } 18 \) D. \( 9 \sqrt{ } 3 \) E. \( 4 \sqrt{ } 42 \)

Question 4 of 5 The perimeter of a rectangle is 42 inches. If the width of the rectangle is 6 inches, what is the length? A. 12 inches B. 15 inches C. 21 inches D. 40 inches

11. Вычислите: \( \frac{10^{7}}{5^{6} \cdot 2^{7}} \)

Simplify \( \frac{8}{\sqrt{6}+2} \)

\#5. The ratio of pink roses to yellow roses in a flower arrangement is \( 5: 3 \). If there are 15 yellow roses, then how many total flowers are in the arrangement?

Write expression \( \log \left(\frac{x^{4} y^{17}}{z^{2}}\right) \) as a sum or difference of logarithms with no exponents. Simplify your answer completely. \( \log \left(\frac{x^{4} y^{17}}{z^{2}}\right)=\square \)