All categories

3 years ago

What is the value of the sum?

Mathematics

2 answers:

lbvjy [14]3 years ago

8 0

Hope this helps if it’s too hard to read comment below :)

Anna35 [415]3 years ago

4 0

Answer:

-1/16

Step-by-step explanation:

You might be interested in

which of the following best describes the line the arrow is pointing to in the regular pentagon below? A. Leg B. Diagonal C. Bas

Tomtit [17]

It would be B. Diagonal

8 0

4 years ago

A culture started with 4000 bacteria after 8 hours it grew to 4400 bacteria. Predict how many bacteria will be present after 9 h

Leno4ka [110]

$\bf \qquad \textit{Amount for Exponential change}\\\\
A=P(1\pm r)^t\qquad 
\begin{cases}
A=\textit{accumulated amount}\\
P=\textit{starting amount}\\
r=rate\to r\%\to \frac{r}{100}\\
t=\textit{elapsed period}\\
\end{cases}\\\\
-------------------------------\\\\$

$\bf A=P(1+r)^t\qquad 
\begin{cases}
\textit{hour 0, starting point}\\
t=0\qquad A=4000
\end{cases}\implies 182=ae^{k0}
\\\\\\
4000=P(1+r)^0\implies 4000=P
\\\\\\
thus\qquad A=4000(1+r)^t\\\\
-------------------------------\\\\$

$\bf A=P(1+r)^t\qquad 
\begin{cases}
\textit{8 hours later}\\
t=8\qquad A=4400
\end{cases}\implies 4400=4000(1+r)^8
\\\\\\
\cfrac{4400}{4000}=(1+r)^8\implies \cfrac{11}{10}=(1+r)^8\implies \sqrt[8]{\cfrac{11}{10}}=1+r
\\\\\\
\sqrt[8]{\cfrac{11}{10}}-1=r\implies 0.012\approx r\qquad thus\qquad \boxed{A=4000(1+0.012)^t}$

how many bacteria after 9 hours? well, 9hours later is just t = 9, plug that in, to get A

4 0

3 years ago

Read 2 more answers

Simplify the expression and state any restrictions

9966 [12]

Answer:

were is the picture

Step-by-step explanation:

7 0

4 years ago

What is Pi equal to (First 20 digits)

Juliette [100K]

Answer:

3.14159265358979323846

Step-by-step explanation:

3 0

3 years ago

2 7/9x2/3 please help

Furkat [3]

Answer:

Improper: 2 42/9 proper: 6 6/9

Step-by-step explanation:

2 7/9 x 2/3

find the common denominator which is 9 so now we have,

2 7/9 x 2/9

find the numerator which is,

2 7/9 x 6/9

multiply

2 42/9

This fraction is improper so lets make it proper,

42 goes into 9 four times

so we have,

6/9 + 2 + 4

final answer,

6 6/9

4 0

3 years ago