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Murljashka [212]
3 years ago
8

True or false the foci of an ellipes can be outside the ellipes

Mathematics
1 answer:
Romashka-Z-Leto [24]3 years ago
6 0

Answer:

false

Step-by-step explanation:

foci are usually in the ellipse. that foci is where the ellipse is drawn from

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Brian invests ?1900 into a savings account. The bank gives 3.5% compound interest for the first 2 years and 4.9% thereafter. How
Scorpion4ik [409]

let's check how much is it after 2 years firstly.


\bf ~~~~~~ \textit{Compound Interest Earned Amount} \\\\ A=P\left(1+\frac{r}{n}\right)^{nt} \quad \begin{cases} A=\textit{accumulated amount}\\ P=\textit{original amount deposited}\dotfill &1900\\ r=rate\to 3.5\%\to \frac{3.5}{100}\dotfill &0.035\\ n= \begin{array}{llll} \textit{times it compounds per year}\\ \textit{yearly, thus once} \end{array}\dotfill &1\\ t=years\dotfill &2 \end{cases} \\\\\\ A=1900\left(1+\frac{0.035}{1}\right)^{1\cdot 2}\implies A=1900(1.035)^2\implies A=2035.3275


Brian invested the money for 6 years, so now let's check how much is that for the remaining 4 years.


\bf ~~~~~~ \textit{Compound Interest Earned Amount} \\\\ A=P\left(1+\frac{r}{n}\right)^{nt} \quad \begin{cases} A=\textit{accumulated amount}\\ P=\textit{original amount deposited}\dotfill &2035.3275\\ r=rate\to 4.9\%\to \frac{4.9}{100}\dotfill &0.049\\ n= \begin{array}{llll} \textit{times it compounds per year}\\ \textit{yearly, thus once} \end{array}\dotfill &1\\ t=years\dotfill &4 \end{cases}


\bf A=2035.3275\left(1+\frac{0.049}{1}\right)^{1\cdot 4}\implies A=2035.3275(1.049)^4 \\\\\\ A\approx 2464.54\implies \boxed{\stackrel{\textit{rounded up }}{A=2465}}

4 0
3 years ago
Three out of every 20 students in ms. jones’ Math class earned a grade of A. What percent of the students earned a grade of A?
erica [24]

Answer:

15%

Step-by-step explanation:

3/20x100=15

6 0
2 years ago
Round to the underlined place.<br>​
pickupchik [31]

Answer:

the answer would be 8.38

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What is the answer please really stuck ​
Pavlova-9 [17]

Answer:

X is 30

Step-by-step explanation:

X is 30

23 plus 8 times 2

4 0
3 years ago
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Can someone help me with this math homework please!
TEA [102]

Answer:i dont know

Step-by-step explanation:

4 0
3 years ago
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