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2 years ago

Pls help will give brainliest

Mathematics

1 answer:

spayn [35]2 years ago

6 0

Answer:

Step-by-step explanation:

Let the width of the mechanical pencil lead be w_m and the width of a human hair be w_h. We are trying to find the number of widths of pieces of hair (let that be n) that make it equal to the width of a mechanical pencil lead, so we write the equation w_m=n*w_h. Hopefully, writing an equation makes this easier to understand!

Now, I want n, so I divide be w_h on both sides, substitute, and get that n = w_m/w_h = (7*10^-4)/(1*10^-4)

The 10^-4’s cancel, so we get n = 7/1 = 7.

I hope this helps! :)

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An investment of $5000 earns $6000 simple interest in 12 years. Calculate the interest rate.

adoni [48]

Answer:

10%

Step-by-step explanation:

To solve this problem we can use a modified version of the simple interest formula which is shown below:

$r=\frac{I}{Pt}$

I = interest amount

P = principal amount

t = time (years)

Lets plug in the values:

$r=\frac{6000}{(5000)(12)}$

$r=0.1$

The last step is to convert 0.1 into a percent:

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2 years ago

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Licemer1 [7]

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3 years ago

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It is given that 2^x = 5^y = 10^z , express z in terms of x and y

weqwewe [10]

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Answer:

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Step-by-step explanation:

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Then z/x = log(2), and z/y = log(5), so ...

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Answer:

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3 years ago

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svlad2 [7]

188.3 ÷ 7 then...
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