Step-by-step explanation:
<em> </em><em>REFER</em><em> </em><em>TO</em><em> </em><em>THE</em><em> </em><em>ATTACHMENT</em><em> </em>
<em>HEY</em><em> </em><em>IN</em><em> </em><em>WHICH</em><em> </em><em>CLASS</em><em> </em><em>YOU</em><em> </em><em>ARE</em><em> </em><em>ROSA</em>
Use proportion to solve this.
240 miles needs 9 gallons
216 miles needs (9÷240) × 216 = 8.1 gallons
Hope it helped!
We can use trigonometry. The cosine of 15 will be the side adjacent to the 15-degree side (the one we are looking for) divided by 20, the hypotenuse. As cos(15) is about .966, we get 19.32 as the side we are looking for.