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castortr0y [4]
3 years ago
10

I got this wrong on a test and I can't understand it. Can someone explain? I figured out it was compound interest, but I dont kn

ow how to calculate the interest rate from this. 20 points

Mathematics
1 answer:
Oliga [24]3 years ago
3 0
A = P(1+i)ⁿ ==> compound interest where P= initial Capital, I =interest in% and n the number of years. A is the total amount collected over n years

A= 500(1.0325)¹² ==> 500(1+0.0325)¹² ==> 500(1+3.25%)¹²
The mistake is:
Either she has a yearly interest of 3.25% & she wrote 12 instead of 3 (years)
OR
She got a quarterly interest of 3.25% and in this case she should have divided 3.25& by 12 (4 quarter a year ==> 12 quarter for 3 years) by keeping as exponent the number 12 (right)

1)Now the Amount of A (as she wrote it) =500(1.0325)¹² = 734
2) If she wrote 12 instead of 3, and after correction A=500(1.0325)³ =550
3) But if she had taken the quarterly interest for a period of 3 years (12 Qrtr)
 then A =500[1+(3.25%)/4]¹² = 551


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Find the interest principle 8000 rate .06 compounded annually years 3
HACTEHA [7]

Answer:

535.07

Step-by-step explanation:

S=P(1+ i) ^n

i= nominal rate of interest / number of compounding periods

i =. 06/12

=0.18

Divided by 100

=0.0018

n- number of times interest is given per year x the number of years

n=12x3

=36

8000(1+0.0018)^36

=8535.07

Interest

8535.07 - 8000

=535.07

7 0
3 years ago
Anais bought 212212 yards of ribbon. She had 2 feet 8 inches of ribbon left after trimming some curtains. How many inches of rib
jonny [76]
2 1/2 yds = 2.5 x 36 = 90 inches...what she started with

2 ft 8 in = 2(12) + 8 = 32 inches...what she had left

90 - x = 32 
90 - 32 = x
x = 58 inches....so she used 58 inches


4 0
3 years ago
Sara is making a key chain using the bead design shown. What fraction of the beads in her design are either blue or red? 
klio [65]
You can make a ratio of red to overall colors and then that will give you the fraction, you might have to simplify it
4 0
3 years ago
There are three apple orchards. Each orchard has a different number of trees and apples. Orchard Apple trees Total apples The #1
Elan Coil [88]

Answer:

(Choice A) A The 1 Seed

Step-by-step explanation:

The computation is shown below:

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For Seed

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= 75509 ÷ 178 = 424 approx

And, for apple valley

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= 433 approx

As it can be seen that the highest rate per of apple per tree is of seed i.e. 460 approx

hence, the correct option is choice A

3 0
3 years ago
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svetoff [14.1K]

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Step-by-step explanation:

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