Question

Two candles start burning at the same time. One candle is 15 cm tall and burns at a rate of 5 cm

Answer 1

The height of the candles when they first burn down to the same height is 10 cm

What is an equation?

An equation is an expression that shows the relationship between two or more numbers and variables.

An independent variable is a variable that does not depends on other variable while a dependent variable is a variable that depends on other variable.

Let y represent the height of the candle after x hours.

For the first candle:

y = -(5/6)x + 15

For the second candle:

y = -(5/2)x + 25

To have the same height:

-(5/6)x + 15 = -(5/2)x + 25

x = 6 hours

y = -(5/2)(6) + 25 = 10 cm

The height of the candles when they first burn down to the same height is 10 cm

Find out more on equation at: brainly.com/question/2972832

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