3 years ago

Which equation represents a direct variation? y = 2^x y=x + 4 Y=1/2x Y=3/x

Mathematics

1 answer:

FinnZ [79.3K]3 years ago

7 0

Answer:

The answer is

Y=1/2x

K is a constant and a direct variation has to be proportional

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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

Varvara68 [4.7K]

Answer: $56,900\left( 0.919\right)^x$

Step-by-step explanation:

Given

Marcos purchased a sailboat for $\$56,900$

Each year the boat will decrease in value by $8.1\%$

After 1 year it is

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

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

$\Rightarrow 56,900\left( 1-0.081\right)^x$

$\Rightarrow 56,900\left( 0.919\right)^x$

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I need help with all of these ASAP thank you so much

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Answer:

Step-by-step explanation:

Functions meet the vertical line test:

a vertical line will intersect the graph at most at one point

C doesn't pass the vertical line test and is therefor not a function

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Yesterday between nooN And midnight the temperature dropped by 29.6 if the temperature was-5.4 at midnight what was it at noon

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That would depend on how many vehicles there are. The question is not complete.

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