Elio makes candles that are 14 cm tall. Each candle burns 8 hours before going out. He is wondering how many hours a 21 cm tall candle can burn for. He assumes that the relationship between the height of a candle and number of hours it burns is proportional. How long can a 21 cm tall candle burn for?

12 hours

Step-by-step explanation:

Create a proportion where x is how long the 21 cm candle can burn for:

=

Cross multiply and solve for x:

14x = 168

x = 12

So, the 21 cm tall candle can burn for 12 hours

step-by-step explanation:

at each of the parallel lines adjacent angles are supplementary. the angles have special names identifying their positions with respect to the parallel lines and transversal. they are corresponding angles, alternate interior angles, or alternate exterior angles. an angles is congruent to its matched angle.