Which of the following values in the set below will make the equation 2x + 1 = 3 true? (Only input the number.)

Mathematics

2 answers:

slava [35]4 years ago

7 0

The only one that makes sense is 1

Nookie1986 [14]4 years ago

5 0

2(1)+1=3 the answer is 1

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Over the last three evenings Lucy received a total of 122 phone calls at the call center. The first evening she received 10 fewe

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What does 1.5 times more than x mean?

klemol [59]

Whatever x is times 1.5

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3 years ago

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What is the correct answer?

alexgriva [62]

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A business was valued at £80000 at the start of 2013. In 5 years the value of this business raised to £95000. this is equivalent

Yuri [45]

the yearly increase of x% assumes is compounding yearly, so let's use that.

$~~~~~~ \textit{Compound Interest Earned Amount} \\\\ A=P\left(1+\frac{r}{n}\right)^{nt} \quad \begin{cases} A=\textit{accumulated amount}\dotfill &\£95000\\ P=\textit{original amount deposited}\dotfill &\£80000\\ r=rate\to r\%\to \frac{r}{100}\\ n= \begin{array}{llll} \textit{times it compounds per year}\\ \textit{yearly, thus once} \end{array}\dotfill &1\\ t=years\dotfill &5 \end{cases}$

$95000=80000\left(1+\frac{~~ \frac{r}{100}~~}{1}\right)^{1\cdot 5}\implies \cfrac{95000}{80000}=\left( 1+\cfrac{r}{100} \right)^5 \\\\\\ \cfrac{19}{16}=\left( 1+\cfrac{r}{100} \right)^5\implies \sqrt[5]{\cfrac{19}{16}}=1+\cfrac{r}{100}\implies \sqrt[5]{\cfrac{19}{16}}=\cfrac{100+r}{100} \\\\\\ 100\sqrt[5]{\cfrac{19}{16}}=100+r\implies 100\sqrt[5]{\cfrac{19}{16}}-100=r\implies 3.5\approx r$

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2 years ago

Use long division to find the quotient of 405 and 27

asambeis [7]

27|405 27*1=27
- 27 27*5=135
-------
135
-135
--------
0

Answer is 6 :v

7 0

4 years ago