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larisa [96]
3 years ago
10

You invest $2,800 in an account that pays an interest rate of 6.5% compounded continuously calculate the balance of your account

after 19 years. Round your answer to the nearest hundredth
Mathematics
1 answer:
Lady_Fox [76]3 years ago
8 0

Answer:

$9627.46

Step-by-step explanation:

-The amount after 19 years for a 6.5% compounded continuously is given by the formula:

A=Pe^{rt}

Where:

A is the final amount after investment

P is the initial amount invested

r is the stated annual interest rate.

t is period of investment

#We then substitute our values in the equation to solve for A:

A=Pe^{rt}\\\\=2800e^{19\times 0.065}\\\\=9627.46

Hence, the amount after 19 years is $9,627.46

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serg [7]

Answer:

Maybe yawl can help me on this one too because i do not know this.

Step-by-step explanation:

4 0
3 years ago
1. Find the vertex of the following: y = (x - 4)(x - 10) *
horsena [70]

Answer:

1. (7,-9)

2. (4,0) and (10,0)

3. (3,0) and (-3,0)

4. (0,-9)

5. (-1,-32)

Step-by-step explanation:

To find the vertex use the formula

\frac{-b}{2a}

First make the equation into a quadratic equation.

(x-4)(x-10)\\x^{2} -10x-4x+40\\x^{2} -14x+40

Now it is in the form

ax^{2} +bx+c=0

Now we can substitute the values

\frac{-(-14)}{2(1)} \\\frac{14}{2} \\7

Now we have 7 as our x value for the vertex we can substitute for y,

x^{2} -14x+40=y\\(7)^{2} -14(7)+40=y\\49-98+4=y\\y=-9

So the vertex for 1 is (7,-9)

To find the intercepts for 2 & 3, they basically already give it to you. You just need to find a value for x for x-4 that will equal it to 0 and another for x for x-10 that will equal it to 0.

x-4=0\\x=4\\\\x-10=0\\x=10

4 is slightly different but start the same,

(x-3)(x+3)\\x^{2}+3x-3x-9\\x^{2}-9

Here, c (9) just shows the graph move down 9, so the y intercept = 9.

5 is the same process as 1,

2(x-3)(x+5)\\2(x^{2}+5x-3x-15)\\2(x^{2}+2x-15)\\2x^{2}+4x-30

Vertex,

\frac{-(4)}{2(2)} \\\frac{-4}{4} \\-1

Substitute,

2x^{2}+4x-30\\2(-1)^{2}+4(-1)-30\\2-4-30\\-32

So the vertex is (-1,-32)

8 0
3 years ago
Type the number to the left of the rational number in the box to the point it represents on the number
svlad2 [7]

Answer:

I put the numbers first because it was easier for me to do but if it confuses you I can redo it

1. C

2. D

3. F

4. B

5. E

6. A

7 0
2 years ago
Help me out here pleaseeeeeee
lord [1]
Answer : C (24 - 6) ÷ 3

(almost 100% sure this is correct lol)
8 0
2 years ago
Read 2 more answers
What is the best approximation of the surface area of this right cone?
inn [45]
\bf \textit{total surface area of a cone}\\\\
s=\pi r\sqrt{r^2+h^2}+\pi r^2\quad 
\begin{cases}
r=radius\\
h=height\\
-----\\
r=12\\
h=9
\end{cases}
\\\\\\
s=\pi (12)\sqrt{12^2+9^2}+\pi (12^2)\implies s=12\pi \sqrt{225}+144\pi 
\\\\\\
s=12\pi (15)+144\pi \implies s=180\pi +144\pi \implies s=324\pi
8 0
2 years ago
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