\( \begin{array}{ll}61,45: & \text { e) } 58,3541= \\ \text { c) } 2,5: & \text { f) } 0,57 \\ 7,3: & \text { g) } 6,37 \\ \text { d) } 34,65: & \text { h) } 9,764=\end{array} \)

Evaluate the following expression without using a calculat \( \log _{6}(\sqrt{6}) \) \( \log _{6}(\sqrt{6})=\square \)

(1) RAZONAMIENTO. Escribir los términos que hacen ver- dadera la igualdad. \( \begin{array}{ll}\text { 28. }(2) \times(23)=\square & \text { 29. }(-8) \times(-9)=\square \\ \text { 30. } \square \times(-7)=-42 & \text { 31. } 3 \times \square=33 \\ \text { 32. } 9 \times \square=-27 & \text { 33. } \square \times(-3) \times(\square)=9 \\ \text { 34. }(-5)(-3) \times \square=45 & \text { 35. }(-9) \times \square \times(-1)=36 \\ \text { 36. } \square \times \square \times \square=81 & \text { 37. }(-1) \times \square \times \square=-18\end{array} \)

ACTIVIDAD Resolver las siguientes ecuaciones utilizando la formula general. a) \( x^{2}-x-6=0 \) b) \( 2 x^{2}-4 x-6=0 \)

The lengths of the rectangle have been measured to the nearest tenth of a metre. Work out the following, writing down all the figures on your calculator display: a) The upper bound for the perimeter of the rectangle. b) The lower bound for the area of the rectangle. 15.8 m

Brainstorm a Solution Discuss which material is best suited transporting different foods. Weigh the pros and cons of each material. Be sure to include the cost and woight of eash and hy affects the total shipping costs.