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Nataliya [291]
3 years ago
14

chelsea deposits $600 into a bank account and is earning simple interest.After 4 years her account has a balance of $621.60.If C

helsea decides to put $1100 into the bank account instead of $600 how much would she have in her account after 7 years?
Mathematics
1 answer:
olga nikolaevna [1]3 years ago
8 0
If she deposited $600 and had $621.60 after four years, then she earned: $621.60 - $600 = $21.60 in four years. It means in one year she earned $21.60 ÷ 4 = $5.40. Now we have to find out how many percent of $600 is $5.40:

$5.40 = x% from $600
5.4 = x/100 * 600
5.4 = 600x/100                 / * 100 (both sides)
540 = 600x                       / ÷ 600 (both sides)
x = 0.9

So the interest rate was 0.9% annually.

Now we have to find out how much is 0.9% from $1100:

$1100 * 0.9% =
= 1100 * 9/1009 =
= 9900/1000 =
= 9.9

It means in one year she would earn $9.90. After 7 years she would earn $9.90 * 7 = $69.30, so she would have in her account:

$1100 + $69.30 = <u>$1169.30</u>
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The total number of dollars you would have received if you received one dollar on your first birthday, two dollars on your secon
Tanzania [10]

Answer:

262,143

Step-by-step explanation:

  1. 1
  2. 1+2
  3. 3+4
  4. 7+8
  5. 15+16
  6. 31+32
  7. 63+64
  8. 127+128
  9. 255+256
  10. 511+512
  11. 1023+1024
  12. 2047+2048
  13. 4095+4096
  14. 8191+8192
  15. 16,383+16,384
  16. 32,767+32,768
  17. 65,535+65,536
  18. 131,071+131,072

        =262,143

6 0
3 years ago
HEEEEEEELP ASAP Janette went to Tire Mart and paid $122.57 per tire for 4 tires and a flat rate fee for installation for a total
Oduvanchick [21]
$122.57 • 4 + $555.28 = $1,045.56

$136.71 • 4 + $585.34 = $1,132.18

$1,132.18 - $1,045.56 = $86.62
6 0
3 years ago
The dimensions of a rectangle can be given by x+9 and x-2. If the area is 60ft^2, what is the value of X?
Veronika [31]

Answer:

6

Step-by-step explanation:

(x + 9) * (x - 2) = 60

x^2 - 2x + 9x - 18 = 60

x^2 + 7x - 18 = 60

x^2 + 7x = 78

FACTORING:

x(x + 7) = 78

x = 6

6 0
3 years ago
Express 0.64 as a fraction in lowest term? <br><br> A. 64/10<br> B.5/32<br> C.4/5<br> D.16/25
Elanso [62]

In its decimal form, it says  ' 64 / 100 '.

In order to change it to its lowest terms, we look to see whether the
numerator and denominator have a common factor greater than ' 1 '. 
If they do, then we can divide numerator and denominator by their
common factor, and have the same fraction in lower terms.

The common factors of  64  and  100  are  1,  2, and  4 .
We could divide top and bottom by 2, but that wouldn't finish the job. 
It's always best to divide them by their <u>greatest</u> common factor, and
once you do that, you're done.

Dividing the numerator and denominator both by  4,
we get the fraction in its lowest terms:

         0.64  =  64/100  =  <em>16/25</em>


5 0
3 years ago
No woman has broken the 10-second barrier in the 100 -meter runfind probability the empirical probability that a womwn will brea
Anuta_ua [19.1K]
Let me help you!

What we have so far:
Number of times the event occured = 0
Total number of times the event was performed = 0

We will use the empirical probability formula for this problem:
Empirical probability formula = Number of times the event occured / Total number of times the event was performed

Solving for the porblem:
Empirical probability formula = 0.

*** Without even solving the problem, you can take the word "NO" as a hint that there's simply no chance any woman can beak the 10 seconds barrier in a 100 meter run.

Therefore, there is 0 probability that a woman will break the 10 seconds barrier in a 100 meter run.
7 0
3 years ago
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