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3 years ago

If y varies directly as x, and x= 8 when y= 24, what is the value of x when y= 48

2 answers:

5 0

Notice that 24 is half of 48.

48/24= 2

So, we need to do the same for the x variable.

8*2= 16

"C" 16 <em>would be your answer.
</em>
I hope this helps!
~kaikers

saveliy_v [14]3 years ago

4 0

8/24 = x / 48
cross multiply
(24)(x) = (8)(48)
24x = 384
x = 384/24
x = 16 <===

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3 years ago

Marcos purchased a sail boat for $56,900. He anticipates each year the boat will decrease in value by 8.1% from the previous yea

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after another year it becomes

$\Rightarrow 56,900\left( 1-0.081\right)-56,900\left( 1-0.081\right)\times 0.081\\\Rightarrow 56,900\left( 1-0.081\right)\cdot \left( 1-0.081\right)\\\Rightarrow 56,900\left( 1-0.081\right)^2$

After $x$ years it is

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3 years ago