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Firlakuza [10]
4 years ago
9

if someone deposited 2000 at 6% simple intrest . how long will it be before she has 2600 in her account

Mathematics
1 answer:
den301095 [7]4 years ago
8 0
30. Given problem : You deposited 2 000 dollars, then you will earn 6% simple interest. Question: How long will it become 2 600 dollars. Well, you didn’t mention if it’s an annual interest or monthly interest. But let’s say that it’s a monthly interest, then let’s start solving: => 2000 Is the original amount + 6% interest first month = 2000 * .06 = 120 => 2000 + 120 = 2120 2nd month = 2120 *.06 = 127.2 => 2120 + 127.2 = 2247.2 3rd month = 2247.2 *.06 = 134.832 => 2247.2 + 134.832 = 2382.032 4th month = 2382.032 * .06 = 142.92192 => 2382.032 + 142.92192 = 2524.95392 5th month = 2524.95392 * .06 = 151.497 => 2524.95392 + 151.497 = 2676.45 Thus, on the fifth month she will earn this amount.
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5x-y=-1 + -5x+3y=25 for two variable elimination quiz
MakcuM [25]

Answer:

(\frac{11}{5},12)

Step-by-step explanation:

The system is

5x-y=-1

-5x+3y=25

We the two equations to get:

5x+-5x+-y+3y=25+-1

We simplify t get

2y=24

We divide both sides by 2 to get:

y=12

We now substitute y=12 in to the top equation to get:

5x-12=-1

5x=11

x=\frac{11}{5}

6 0
3 years ago
The values of x and y vary directly write an equation that relates x and y x = 0.1 y = 0.9
seropon [69]

9514 1404 393

Answer:

  y = 9x

Step-by-step explanation:

If you like, you can start with the proportion ...

  x/y = 0.1/0.9

Multiplying by 9y gives ...

  9x = y

The equation you want is ...

  y = 9x

6 0
3 years ago
Construct a 95% confidence interval for the population mean, µ. Assume the population has a normal distribution. A sample of 25
Alex787 [66]

Answer:

Step-by-step explanation:

We want to determine a 95% confidence interval for the mean mean test score of students.

Number of sample, n = 25

Mean, u = 81.5

Standard deviation, s = 10.2

For a confidence level of 95%, the corresponding z value is 1.96. This is determined from the normal distribution table.

We will apply the formula

Confidence interval

= mean ± z score ×standard deviation/√n

It becomes

81.5 ± 1.96 × 10.2/√25

= 81.5 ± 1.96/× 2.04

= 81.5 ± 3.9984

The lower end of the confidence interval is 81.5 - 3.9984 =77.5

The upper end of the confidence interval is 81.5 + 3.9984 = 85.5

Therefore, with 95% confidence interval, the mean test score of students is between 77.5 and 85.5

5 0
3 years ago
(7w3-4w+3)+(5w3-3w-3)
ki77a [65]
That is a simple polynomial addition:
(7w3-4w+3)+(5w3-3w-3)
= <span>(7w^3 - 4w + 3) + (5w^3 - 3w - 3)
= </span>7w^3 - 4w + 3 + 5w^3 - 3w - <span>3
= 12w^3 - 7w
= w(</span><span>12w^2 - 7</span>)
7 0
3 years ago
Of the 50 states, 11 share a border with Canada. What is the ratio of states that border Canada to states that do not border Can
Julli [10]

Answer:

50 - 11 = 39

39 states do not border Canada

11 to 39

7 0
4 years ago
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