Please solve all 3 I need this quick

Mathematics

1 answer:

AnnyKZ [126]3 years ago

5 0

Answer: i have absolutely no idea

Step-by-step explanation:

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PLEASE HELP, URGENT

yaroslaw [1]

16 / 4^3 = 4^n
4^2 / 4^3 = 4^n
4^-1 = 4^n
-1 = n or n = -1

answer
n = -1

4 0

3 years ago

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Esme's tire had a leak. It originally held 30 pounds of pressure but was losing 1.8 pounds of pressure each hour. How many pound

N76 [4]

Answer:

Step-by-step explanation:

7 times 1.8 is 12.6. 30 minus 12.6 is 17.4.

7 0

3 years ago

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The table shows the number of books donated to a library each month. Suppose the growth continues exponentially.

telo118 [61]

$\bf \begin{array}{ccll}
\stackrel{t}{months}&\stackrel{A}{books}\\
\text{\textemdash\textemdash\textemdash}&\text{\textemdash\textemdash\textemdash}\\
0&80\\
1&100\\
2&125
\end{array}$ , we know that on Month 0, the Books were 80

$\bf \qquad \textit{Amount for Exponential Growth}\\\\
A=I(1 + r)^t\qquad 
\begin{cases}
A=\textit{accumulated amount}\to &80\\
I=\textit{initial amount}\\
r=rate\to r\%\to \frac{r}{100}\\
t=\textit{elapsed time}\to &0\\
\end{cases}
\\\\\\
80=I(1+r)^0\implies 80=I\qquad therefore\qquad \boxed{A=80(1+r)^t}$

we also know that on the first month there were 100 books,

$\bf \qquad \textit{Amount for Exponential Growth}\\\\
A=I(1 + r)^t\qquad 
\begin{cases}
A=\textit{accumulated amount}\to &100\\
I=\textit{initial amount}\\
r=rate\to r\%\to \frac{r}{100}\\
t=\textit{elapsed time}\to &1\\
\end{cases}
\\\\\\
100=80(1+r)^1\implies \cfrac{100}{80}=1+r\implies \cfrac{5}{4}=1+r
\implies 
\cfrac{5}{4}-1=r
\\\\\\
 \cfrac{1}{4}=r\implies 0.25=r\qquad therefore\qquad \boxed{A=80(1+0.25)^t}$

now, how many books when t = 8? A=80(1+0.25)⁸, or A=80(1.25)⁸.

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3 years ago

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Question 4 (5 points) Determine the value of x. 4v2 8V2 4 8

Arlecino [84]

Answer:

Step-by-step explanation: