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BARSIC [14]
3 years ago
13

7. Find the amount of money accumulated if you invest $10,000 at 3% interest compounded continuously for 2 years. Round your

Mathematics
1 answer:
IrinaK [193]3 years ago
4 0

Answer:

$10618.37

Step-by-step explanation:

Use the formula for compound interest:

P(t) = P_0e^(rt)

You can look the formula up online to find what each variable represents.

First, our principal amount (P) is 10,000. Our interest rate (r) is 3% and our time (t) is 2. Substitute these into the equations in each variables' place. The equation will look like this:

P(t) = 10,000e^(0.03x2)

P(t) = 10,000e^(0.06)

Note that e is approximately 2.7183 .

Using your calculator, now simply find P(t).

You should get 10618.36972 as your answer. Round that to the nearest cent to get $10618.37 .

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A poster is to have an area of 240 in^2 with 1 inch margins at the bottom and sides and a 2 inch margin at the top. Find the exa
Vsevolod [243]

Answer:

  4√10 inches wide by 6√10 inches tall

Step-by-step explanation:

"Poster area" problems have an interesting general solution. The "printed area" is maximized, or the "poster area" is minimized, when the ratio of poster dimensions is equal to the ratio of margin dimensions.

Here, the top/bottom margins total 3 inches, and the side/side margins total 2 inches. That is, the printed area will be maximized when the poster has a width : height aspect ratio of 2 : 3. If w represents the width, then the total area is ...

  (w)(3/2w) = 240 . . . . square inches

  w^2 = 160

  w = √160 = 4√10 . . . . width in inches

Then the height is ...

  height = (3/2)w = (3/2)(4√10) = 6√10 . . . . height, inches

_____

<em>Graphical solution</em>

A graphing calculator gives the same result for x=width. Poster width is about 12.649 inches (=4√10), and printed area is a maximum of about 170.1 square inches.

_____

<em>Calculus solution</em>

Let x represent the width of the poster. Then x-2 is the width of the printed area. The height of the poster will be 240/x, and the height of the printed area will be (240/x)-3. We want to maximize the printed area ...

  a = (x -2)(240/x -3)

which means we want to find the value of x where the area derivative is zero.

  a = 240 -480/x -3x +6

  da/dx = 0 = 480/x^2 -3

Solving for x, we get ...

  x^2 = 480/3 = 160

  x = √160 = 4√10 . . . . . poster width, as above

3 0
3 years ago
Plz help guys! I will mark everyone who answers correctly for each one! Plz!
ryzh [129]

Answer:

Let's say that x is sam's age and y is Amy's age

x=y-4

and five years ago:

x-5=(y-5)/2

y-4-5=(y-5)/2

2y-18=y-5

y=13

x=9

then:

sam's age is 9 and Amy's age is 13

5 0
2 years ago
Read 2 more answers
Help plz
galina1969 [7]

Answer: Yes it is

Step-by-step explanation:

5 0
2 years ago
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The volume of a rectangular prism with a length of 3.5 m, a width of 8 m, and a height of 6
SSSSS [86.1K]
The volume of the rectangular prism is 3.5x8x6, which is 168 square meters

8 0
3 years ago
How do you find the next three terms in the geometric sequence 9, -3, 1, , ... ?
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Each term is being divided by -3, so the next three terms would be:

-1/3, 1/9, -1/27
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3 years ago
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