SAS MATEMATIKA UMUM \( \times 2024 \) Soal Pilihan Ganda(PG-1) No: \( 1-15 \) 1. \( 2 \times 2 \times 2 \times 2 \times 2 \times 2 \times 2=\mathrm{a}^{n} \) nilai \( \mathrm{a}+\mathrm{n}=\ldots \) A. 7 B. 9 C. 12 D. 14 E. 18

Sarah and Eva took a road trip. Sarah drove two-fifths of the miles. If she drove 128 miles, how many total miles did they drive?

Write the expression as a sum and/or difference of logarithms. Express powers as factors. \[ \log _{2}\left(\frac{x^{10}}{x-8}\right), x>8 \] \( \log _{2}\left(\frac{x^{10}}{x-8}\right)=\square \) (Simplify your answer.)

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

\#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?

The half-life of radium is 1690 years. If 40 grams are present now, how much will be present in 860 years? \( \square \) grams (Do not round until the final answer. Then round to the nearest thousandth as needed.)