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defon
3 years ago
11

Express this equation in logarithmic form. y = bx

Mathematics
2 answers:
tatyana61 [14]3 years ago
8 0
<span><span>the answer to this problem would be log10</span>y=x</span>
Studentka2010 [4]3 years ago
8 0

Answer:

x = \log_b y

Step-by-step explanation:

Using logarithmic rules:

\log a^x = x \log a

\frac{\log x}{\log b} = \log_b x

Given the equation:

y = b^x

Taking log both sides we have;

\log y = \log b^x

Apply the logarithmic rule:

\log y = x \log b

Divide both sides by log b we have;

\frac{\log y}{\log b} = x

Apply the logarithmic rule:

\log_b y = x

or

x = \log_b y

Therefore, the equation in logarithmic form is, x = \log_b y

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I think that's how you do it

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7 0
3 years ago
A bank loaned out ​$19,000​, part of it at the rate of 9 % per year and the rest at 19 % per year. If the interest received in o
VMariaS [17]

Answer: $11100 was loaned at 9%

Step-by-step explanation:

Let x represent the amount that the

bank loaned out at the annual rate of 9%.

Let y represent the amount that the

bank loaned out at the annual rate of 19%.

The bank loaned out ​$19,000​, part of it at the rate of 9% per year and the rest at 19% per year. It means that

x + y = 19000

The interest on $x after 1 year would be

9/100 × x = 0.09x

The interest on $y after 1 year would be

19/100 × y = 0.19y

If the interest received in one year totaled ​$2500. It means that

0.09x + 0.19y = 2500- - - - - - - - - 1

Substituting x = 19000 - y into equation 1, it becomes

0.09(19000 - y) + 0.19y = 2500

1710 - 19000y + 0.19y = 2500

- 0.09y + 0.19y = 2500 - 1710

- 0.1y = - 790

y = - 790/- 0.1

y = $7900

x = 19000 - y = 19000 - 7900

x = $11100

7 0
3 years ago
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