The movement of the progress bar may be uneven because questions can be worth more orless (including zero) depending on your ans A sprinter can run 319 feet in 11 seconds. Find the sprinter's unit rate of feet per second. - \( \frac{29 \text { feet }}{1 \text { second }} \)

5.-Realiza las siguientes operaciones dando el resultado como fracción: \[ \begin{array}{lll}\text { a) } 3,6+\frac{4}{5}-2,08= & \text { b) } 0,3+\frac{2}{9}-0,7= & \text { c) } 3,23-3,23=\end{array} \]

Write each decimal as a percent. \( \begin{array}{l}\text { 10. } 3.9 \\ \text { 11. } 81\end{array} \) \( \begin{array}{ll}\text { 18. } 6.75 & \text { 14. } 2.81 \\ \text { 16. } 0.0046 & \text { 17. } 0.0069\end{array} \) Write each number as a percent.

1. \( \frac{2}{3}+\frac{5}{3} \)

b) \( -5: \frac{10}{3}+\frac{10}{4} \)

EXERCICE 2 - AFRIQUE DU NORD 2001 On considère le nombre : \[ F=\frac{3 \times 10^{2} \times 1,2 \times 10^{-5}}{15 \times 10^{2}} \] Donner l'écriture scientifique du nombre \( F \).