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3 years ago

5

Plz help I’m bad at math

1 answer:

Gwar [14]3 years ago

3 0

Answer:

Branliest appreciated

3. x = 14 degrees

4. x = 17.5 degrees

Step-by-step explanation:

SO, The first question:

6x - 21 = 105

6x = 105 -21

6x = 84

x = 14

SO, The second question:

55 + 85 = 8x

140 = 8x

17.5 = x

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4 years ago

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4 years ago

Read 2 more answers

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pychu [463]

Answer:

Answer:

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Explanation:

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Step-by-step explanation:

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3 years ago

Read 2 more answers

2 In eIn2x - In eIn 10x = In 30<br>x=30<br>x=75<br>x= 150<br>x=300

Alex_Xolod [135]

The value of x = 75 ⇒ 2nd answer

Step-by-step explanation:

Let us revise some rules of logarithmic function

$ln(a) - ln(b)=ln(\frac{a}{b})$
$e^{ln(a)}=a$
$ln(a)^{n}=nln(a)$ vice-versa $nln(a)=ln(a)^{n}$
If ㏑(a) = ㏑(b), then a = b

∵ $2ln(e^{ln(2x)})-ln(e^{ln(10x)})=ln(30)$

- Use the 2nd rule to simplify it

∵ $e^{ln(2x)}=2x$

∵ $e^{ln(10x)}=10x$

∴ 2㏑(2x) - ㏑(10x) = ㏑(30)

- Use the 3rd rule in the 1st term

∵ 2㏑(2x) = ㏑(2x)² = ㏑(4x²)

∴ ㏑(4x²) - ㏑(10x) = ㏑(30)

- Use the 1st rule with the left hand side

∵ $ln(4x^{2})-ln(10x)=ln(\frac{4x^{2}}{10x})$

∴ $ln(\frac{4x^{2}}{10x})=ln(30)$

∵ $\frac{4x^{2}}{10x}=\frac{2x}{5}=\frac{2}{5}x$

∴ $ln(\frac{2}{5}x)=ln(30)$

- Use the 4th rule

∴ $\frac{2}{5}$ x = 30

- Multiply both sides by 5

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- Divide both sides by 2

∴ x = 75

The value of x = 75

Learn more:

You can learn more about logarithmic functions in brainly.com/question/11921476

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8 0

3 years ago

The Montegro Flooring Company can replace 200 square feet of carpet with tile in one day They accept a job replacing carpet with

choli [55]

It will take 5 days for Montegro Flooring Company to complete this job

<u>Solution:</u>

Given, The Montegro Flooring Company can replace 200 square feet of carpet with tile in one day

They accept a job replacing carpet with tile in an apartment that measures 977.5 square feet

We have to find how many days will it take the Montegro Flooring Company to complete this job?

Now, according to given information,

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Then, 977.5 square feet ⇒ n days

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4 years ago