En un terreno rectangular se instalará un cerco con malla de alambre. Las dimensiones del terreno son: 30 metros de largo y 15 metros de ancho. ¿Cuántos metros de malla se ocuparán para instalar el cerco?

Solve \( 2 \operatorname{cosec}\left(2 x-80^{\circ}\right)=4 \) for \( 0^{\circ} \leq x \leq 180^{\circ} \)

20. MARINE BIOLOGY Killer whales usually swim at a rate of \( 3.2-9.7 \) kilometers per hour, though they can travel up to 48.4 kilometers per hour. Suppose a migrating killer whale is swimming at an average rate of 4.5 kilometers per hour. The distance \( d \) the whale has traveled in \( t \) hours can be predicted by the equation \( d=4.5 t \). a. Graph the equation. b. Use the graph to predict the time it takes the killer whale to travel 30 kilometers.

1. Draw a sketch graph to represent each situation below: a) The more sunshine we have, the hotter it becomes b) The longer you travel, the more petrol is used up c) An oven's temperature increases until a certain point when it remains constant d) The longer the hours you work, the more you get paid e) The amount of water in a cup as it gets drunk f) The temperature of a cup of coffee left to cool g) The distance travelled by an accelerating racing car h) The speed of a car which slows down as it goes over a speed bump and then speeds up again.

A ferris wheel is 10 meters in diameter and boarded from a platform that is 5 meters above the ground. The six o'clock position on the ferris wheel is level with the loading platform. The wheel completes 1 full revolution in 4 minutes. The function \( h=f(t) \) gives your height in meters above the ground \( t \) minutes after the wheel begins to turn. Write an equation for \( h=f(t) \). \( f(t)= \)

\( \square<\sqrt{27}<\square \) Submit