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natima [27]
3 years ago
15

What is the difference of 620 and 89.7?

Mathematics
2 answers:
Allushta [10]3 years ago
8 0

Answer: 530.3

Step-by-step explanation:

Difference means to subtract

620-89.7=530.3

777dan777 [17]3 years ago
6 0

Answer:

530.3

Step-by-step explanation:

You want to subtract 620-89.7. If you want to use the standard algorithm you have 620.0-89.7. You "borrow" from the 2 in the tens place, then "borrow" from the ones place. To subtract 10-3 tenths. Then you subtract the ones place which is 9-9=0 ones. Now you subtract 62-8=53 tens. So you have 530.3 as the difference.

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75n-36=21n^2  rearrange so we have an equation equal to zero...

21n^2-75n+36=0  divide whole equation by 3

7n^2-25n+12=0  now factor...

7n^2-21n-4n+12=0  

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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
Varvara68 [4.7K]

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

Step-by-step explanation:

Given

Marcos purchased a sailboat for \$56,900

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\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

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

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

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3 years ago
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