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tia_tia [17]
3 years ago
11

Translate this sentence into an equation.

Mathematics
1 answer:
Andrew [12]3 years ago
3 0

Step-by-step explanation:

"product" means multiplication. the same as "times".

so,

135 = r×9

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Sodium-24 has an hourly decay rate of about 5%. How many grams of a 900 g sample will remain after 90 hours? Round the answer to
Yuki888 [10]
\bf \qquad \textit{Amount for Exponential change}\\\\
A=P(1\pm r)^t\qquad 
\begin{cases}
A=\textit{accumulated amount}\\
P=\textit{starting amount}\to &900\\
r=rate\to 5\%\to \frac{5}{100}\to &0.05\\
t=\textit{elapsed period}\to &90\\
\end{cases}
\\\\\\
A=900(1-0.05)^{90}
5 0
3 years ago
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Possible
irina [24]

Answer:

  about 520,000

Step-by-step explanation:

Following directions, we evaluate the equation by putting the value where the variable is and doing the arithmetic.

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The value of x will be the number of days between May 26 and May 12. That value is ...

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Then the number of mosquitos is estimated to be ...

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About 520,000 mosquitos will inhabit the city on May 26.

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<em>Additional comment</em>

Typically, an "estimate" is one or two significant figures. So, 520,000 is a reasonable estimate. 520,008 has more precsision than can be justified.

8 0
2 years ago
A collection of dimes and nickels is worth $3.30. If there are 42 coins in all, how many nickels are there?
Semmy [17]

Answer:

24

Step-by-step explanation:

5 0
3 years ago
I need help on 8 and 9
Daniel [21]
8. no they are not prime but SOME are...
5 0
3 years ago
Which number is prime?<br> 85<br> 49<br> 70<br> 31
Citrus2011 [14]

Answer: 31 is a prime number because only 1 times itself equals 31. no other two factors equal 31 as a product.

Step-by-step explanation:

5 0
3 years ago
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