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grigory [225]
3 years ago
7

Find both answers for x. 8x-4=x^2-2x+7x-15

Mathematics
1 answer:
melomori [17]3 years ago
8 0

Answer:

Step-by-step explanation:

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Find how long it takes a $ 900.00 investment to earn $ 120.00 in interest if it is invested at 6% compounded annually.
atroni [7]
So, we know the earned interest is 120, and we know the original deposited amount is 900 bucks, so, the accumulated amount will then be 900 + 120 or 1020 bucks.

\bf \qquad \textit{Compound Interest Earned Amount}
\\\\
A=P\left(1+\frac{r}{n}\right)^{nt}
\quad 
\begin{cases}
A=\textit{accumulated amount}\to &\$1020\\
P=\textit{original amount deposited}\to &\$900\\
r=rate\to 6\%\to \frac{6}{100}\to &0.06\\
n=
\begin{array}{llll}
\textit{times it compounds per year}\\
\textit{annually, thus once}
\end{array}\to &1\\
t=years
\end{cases}

\bf 1020=900\left(1+\frac{0.06}{1}\right)^{1\cdot  t}\implies \cfrac{1020}{900}=(1.06)^t\implies \cfrac{102}{90}=(1.06)^t
\\\\\\
log\left(\frac{102}{90}  \right)=log(1.06^t)\implies log\left(\frac{102}{90}  \right)=t\cdot  log(1.06)
\\\\\\
\cfrac{log\left(\frac{102}{90}  \right)}{log(1.06)}=t\implies 20.92 \approx t
7 0
4 years ago
A bag contains 7 marbles: 4 red, 2 yellow, and 1 green. Three
qwelly [4]

Answer:

Step-by-step explanation:

you have 7 reds of 14 total.

the 1st marble has 7 of 14 probability of being red

the 2nd has 6 of 13 of being red

the 3rd has 5 of 12 of being red

multiplying this out you have:

(7/14)*(6/13)*(5/12)=210/2184

THAT will condense down to 5/52 or 9.615%

this does assume not placing the balls back in between draws

if you do put them back in between draws you would have 7 of 14 chance each draw

that would give you by multiplying out

(7/14) * (7/14)* (7/14) = 343/2744

Found it online lol

that condenses to 1 of 8 or 12.5%

Found it online lol

3 0
2 years ago
Write the numbers in order from least to greatest -5.25 1.002 -5.09
Angelina_Jolie [31]
-5.09, -5.25, 1.002

Negative numbers are always the lowest and in decimals .09 is lower then .25
6 0
3 years ago
Read 2 more answers
A scientist was in a submarine, 52.7 feet below sea level, studying ocean life. Over the next ten minutes, she descended 46.7 fe
Oliga [24]

Answer:

99.4 feet.

Step-by-step explanation:

You'd add 52.7 and 46.7, including 52.7 because she was already 52.7 feet under before she went even deeper.

8 0
3 years ago
Please help! 20 points thanks :)
STatiana [176]
As u can see on the graph. You go up 12 and over 8. 12/8 simplified is 3/2. Therefore the correct answer is A

6 0
3 years ago
Read 2 more answers
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