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4 years ago

6 times a number minus eleven

Mathematics

1 answer:

Nookie1986 [14]4 years ago

3 0

Let x be the unknown number.

"6 times a number" is 6 times x, or 6 * x, or simply 6x.

"minus eleven" means to subtract 11, so you must subtract 11 from 6x.

Answer: 6x - 11

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If 2000 dollars is invested in a bank account at an interest rate of 6 percent per year, find the amount in the bank after 7 yea

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Answer:

$3007.26

Step-by-step explanation:

Step one:

given data

Principal= $2000

rate= 6%= 0.06

time= 7years

Required:

The final amount A

Step two:

the expression for the compound interest is

$A= P(1+r)^t$

substituting we have

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1.What values could replace the "?" in these equations to make them true?

Inga [223]

Answer:

Remember that logarithms are inverse of exponentials. That means the result of the logarithm is equal to the exponent of a power with the same base.

$log_{10} (10)=1$

Notice that the result is one beacuse $10^{1}=10$

$log_{10}(10000)=4$

Because $10^{4}=10000$

$log_{10}(?) =7 \implies 10^{7} =10000000$

So, $log_{10}(10000000)=7$

I would say to thim that $x$ and $y$ are variables of the logarithm, which be solved by imagine the logarithm as an exponential like

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In other words, the $y$ is the exponent and the $x$ is the result of the exponential.

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3 years ago