2 years ago

What is a prime number between 10 and 20 is it 16 17 15 or 18

Mathematics

1 answer:

alexandr402 [8]2 years ago

4 0

Answer:

The prime number between 10 and 20 is from your options is 17

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Ksenya-84 [330]

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3 years ago

HELP ASAP RIGHT NOW PLEASE

Makovka662 [10]

Answer:

X=7

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Step-by-step explanation:

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A concert hall has seven sections. Each section has twenty-three rows. Each row has fourteen seats. If the theater sells out for

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3 years ago

The half-life of Radium-226 is 1590 years. If a sample contains 200 mg, how many mg will remain after 1000 years?

adell [148]

Answer: 129.33 g

Step-by-step explanation:

$$$Let $p=A \cdot e^{n t}$ \\$(p=$ present amount, $A=$ initial amount, $n=$ decay rate, $t=$ time)$

$\begin{aligned}&\Rightarrow \text { Given } p=\frac{A}{2} \ a t \ t=1590 \\&\Rightarrow \frac{1}{2}=e^{1590n} \Rightarrow n=\frac{\ln (1 / 2)}{1590}=-0.00043594162\end{aligned}$

$If $A=200 \mathrm{mg}$ and $t=1000$ then,$$\begin{aligned}P &=200 e^{\left(\frac{\ln \left(1/2\right)}{1590}\right) \cdot 1000} \text \\\\&=129.33 \text { grams}\end{aligned}$

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2 years ago

For question 3, is it right though? Thankss

pishuonlain [190]

Yes it is correct, 7/12 is the equivalent to C. 7 divided by 12

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3 years ago