A direct variation is a type of variation that has two types of variables in which a variable can be expressed in terms of the other with its constant.

For example;

If x varies directly as y

Then

x $\sim$ y
x = ky ; where k is constant

The original question says:

if x varies directly as y, and x = 9 when y = 6, find x when y = 15

∴

x = ky

9 = k × (6)

k = 9/6

k = 1.5

Now, we can rewrite the equation from step 1 substituting the value of k into it:

∴

x = ky

when y = 15 and k = 1.5

The value of (x) will be:

x = 1.5 (15)

x = 22.5

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5 0

1 year ago

Which of the following is a true statement about diffusion.

Murljashka [212]

Answer:

D) Molecules move from areas of high concentration to areas of low concentration.

Explanation:

7 0

1 year ago

Which of the following did Kant determine is essential for ethics

Talja [164]

The thing which Kant determined was essential for ethics is to be truthful and to do unto others as you would have them do unto you.

<h3>What is Ethics?</h3>

This refers to the set of values that are used to guide a person in doing the right thing in any given circumstance.

Hence, we can see that Immanuel Kant, a philosopher was of the opinion that for ethics to thrive, then people must always be truthful and also to follow the golden rule.