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Allisa [31]
2 years ago
11

How long will it take for $6400 to grow to $43,800 at an interest rate of 3.4% if the interest is compounded continuously?

Mathematics
1 answer:
andrew-mc [135]2 years ago
7 0

Answer:

57.53years to the nearest hundredth

Step-by-step explanation:

For compound interest,A=P(1+r/100)^t

where r=rate of interest

t= investment tenor

$43800=6400(1+3.4/100)^t

which simplifies to 57.5250≈57.53 to the nearest hundredth

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2 years ago
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Find f(12) = 3/4 x + 2
AlekseyPX

Answer:

f(12) = 11

Step-by-step explanation:

To solve this question:

  1. Substitute x = 12 into the equation: f(12) = 3/4 (12) + 2
  2. Simplify: 3/4 × 12 = 36/4 which is 9 → f(12) = 9 + 2
  • f(12) = 11

Hope this helps!

5 0
2 years ago
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Look at this cylinder:
Sedbober [7]
  • Height=h=8cm
  • Radius=r=4cm

We know

\boxed{\sf \star TSA_{(Cylinder)}=2\pi r(h+r)}

\\ \sf\longmapsto TSA_{(Old\:Cylinder)}=2\times \dfrac{22}{7}\times 4(8+4)

\\ \sf\longmapsto TSA_{(Old\:Cylinder)}=\dfrac{176}{7}(12)

\\ \sf\longmapsto TSA_{(Old\:Cylinder)}=\dfrac{2112}{7}

\\ \sf\longmapsto TSA_{(Old\:Cylinder)}=301.7cm^2

Now

  • New Radius=2(4)=8cm
  • New Height=2(8)=16cm

\\ \sf\longmapsto TSA_{(New\:Cylinder)}=2\times \dfrac{22}{7}\times 8(16+8)

\\ \sf\longmapsto TSA_{(New\:Cylinder)}=\dfrac{352}{7}(24)

\\ \sf\longmapsto TSA_{(New\:Cylinder)}=\dfrac{8448}{7}

\\ \sf\longmapsto TSA_{(New\:Cylinder)}=1204.7cm^2

So

\\ \sf\longmapsto \dfrac{TSA_{(New\:Cylinder)}}{TSA_{(Old\:Cylinder)}}=\dfrac{1204.7}{301.7}

\\ \sf\longmapsto \dfrac{TSA_{(New\:Cylinder)}}{TSA_{(Old\:Cylinder)}}=\dfrac{4}{1}

\\ \sf\longmapsto\underline{\boxed{\bf{ {TSA_{(New\:Cylinder)}}:{TSA_{(Old\:Cylinder)}}=4:1}}}

Hence our correct option is Option C

6 0
2 years ago
In which is the vaule of the 6 ten times the vaule of the 6 in the number 6000
OLEGan [10]

Answer:

Consider matrix A.

What is the inverse of A? Fill in the missing elements in the matrixs.

Step-by-step explanation:

Consider matrix A.

What is the inverse of A? Fill in the missing elements in the matrixs.

6 0
3 years ago
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Given the statement 11^(n -6) is divisible by 5 for every positive integer n. What must be shown in the induction step?
Lilit [14]

Answer:

Proved

Step-by-step explanation:

The given data is:

11^n - 6 not 11^{n - 6

Required

Prove by induction that it is divisible by 5

Assume n = k

So, we have:

11^k - 6 = 5p where p is a positive digit

Rewrite as:

11^k = 5p + 6

To solve further, we have to prove that 11^k - 6 is true for n=k+1

So, we have:

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11^{k+1} - 6 = 11^k * 11 - 6

Add 0

11^{k+1} - 6 = 11^k * 11 - 6 + 0

Replace 0 with -5 +5

11^{k+1} - 6 = 11^k * 11 - 6 - 5 + 5

11^{k+1} - 6 = 11^k * 11 - 11- 5

Factorize

11^{k+1} - 6 = 11 (11^k - 1)- 5

Substitute 11^k = 5p + 6

11^{k+1} - 6 = 11 (5p + 6- 1)- 5

11^{k+1} - 6 = 11 (5p + 5)- 5

Factorize

11^{k+1} - 6 = 11 *5(p + 1)- 5

Factorize

11^{k+1} - 6 = 5[11(p + 1)- 1]

<em>The 5 outside the bracket implies that it is divisible by 5</em>

3 0
3 years ago
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