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Finger [1]
3 years ago
5

The question is evaluate x÷1.2 for each value of x         x=40.8

Mathematics
1 answer:
Aleks [24]3 years ago
4 0
x:1.2\\\\x=40.8\to40.8:1.2=34

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A tool set is on sale for $424.15.The original price of tthe tool set was $499.00. What percent of the original price is the sal
Jet001 [13]

Answer:


Step-by-step explanation:

The sale price is out of the original price so do 424.15 / 499.00 to find what it is out of in decimal form. Multiply your answer by 100 to find the percentage.

So:

424.15 / 499.00 =0.85

0.85 x 100 = 85

So the answer would 85%.

Hope this helps!


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3 years ago
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The second and fourth one

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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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3 years ago
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hoa [83]

Answer: 8.5

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7 0
3 years ago
Read 2 more answers
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