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erma4kov [3.2K]
3 years ago
15

What is 90% written as a decimal rounded to the thousandths place.

Mathematics
2 answers:
astraxan [27]3 years ago
8 0

Answer: 0.900

Step-by-step explanation:

We know that to convert a percent number into decimal or fraction, we divide it by 100.

The given value : 90%

To convert it in decimal , we need to divide it by 100 , we get

90\%=90\div100=\dffrac{9}{10}=0.900

Therefore, the 90% written as a decimal (rounded to the thousandths place)=0.900

USPshnik [31]3 years ago
6 0
     <span> Percents as decimals are that number divided by 100. The rule is to move the decimal 2 places to the left.
.9
.3
1.159
.09
.07
.65
.003
4.45

edit:
None need to be rounded so do you mean given to the thousandth place? In that case the thousandth is 3 decimal slots places to the left so like this:
.900
.300
1.159
.090
.070
.650
.003
4.450</span>
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Answer:

H0: mu = 8.9 fl oz.\\\\

Ha: mu ≠8.9 fluid oz

Step-by-step explanation:

Given that A perfume company claims that the mean weight of ther new perfume is at least 8.9 fluid oz

For testing this claim, in Statistics we perform a certain measures called hypothesis testing.

For this first step is to create null and alternate hypothesis.

Normally null hypothesis would have some statistic = something

Here we want to test the mean weight of perfume

Hence null hypothesis would be

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Alternate hypothesis would be opposite of this claim

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Ha: mu ≠8.9 fluid oz

Hence answer is

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Ha: mu ≠8.9 fluid oz

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3 years ago
Write 12 ten thousands, 8 thousands,14 hundreds, 7 ones in standard form
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<span><u><em>The correct answer is: </em></u>
129,407.

<u><em>Explanation</em></u><span><u><em>: </em></u>
12 ten-thousands = 12*10000=120,000.
8 thousands = 8*1000=8000;
<u>this gives us</u> 120,000+8,000=128,000.

14 hundreds = 14*100=1400;
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Answer:

after 3 hours of instruction.

Step-by-step explanation:

First, start by setting up the equation.

Leda charges an initial fee, meaning this fee is only going to be one time. However, there is an hourly rate of 11. Since we do not know how many hours these piano lessons are going to last, we put a variable (I will use x), after this number.

The initial fee is 8.50. There needs to be a variable after 11 because that is the number we don't know.

The equation for Leda's lessons are <em>8.50+11.00x. </em>

Now, we need to find out what the equation for Thanh's lessons are going to be, because we're going to be setting both equations equal to each other to find out when they cost the same. At the moment both equal each other, is when they are the same amount.

Thanh's equation also has an intial fee and an hourly rate. So, the equation will be

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Now we solve.

<em>8.50+11.00x = 10.00+10.50x </em>

First, subtract from both sides. We will do the numbers without variables first.

<em>8.50+11.00x = 10.00+10.50x </em>

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<em>____________________</em>

<em>0     +11.00x =   1.50 +10.50x</em>

Then, subtract the x's. (taking away the zero because it is equivalent to nothing)

<em>11.00x =   1.50 +10.50x</em>

<em>- 10.50x            -10.50x</em>

<em>__________________</em>

<em>0.50x = 1.50 </em>

Lastly, to find out the answer, we divide.

1.50/0.50= 3.

<u>To check your answer, you can plug into the original equation. </u>

<em>8.50+11.00 times 3 = 10.00+10.50 times 3 </em>

Both sides equal 41.50, meaning they are equal to each other!

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