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Sav [38]
3 years ago
15

If 130 is invested in a savings account that earns 4% interest per year, which of the following is closest to the amount in the

account at the end of 10 years
Mathematics
1 answer:
kykrilka [37]3 years ago
4 0
The answer would be 182
4% of 130 = 5.2
5.2 x 10yrs = 52
130 + 52 = 182
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Alex777 [14]

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4 0
2 years ago
Sara solved the equation -6(x-2) + 3x = -3(x+3) + 21 What is the solution? <br> pls help :)
kirill115 [55]

To solve you can use inverse operations.

Here are the steps to find the answer:

1. Write out the equation: -6(x-2)+3x= -3(x+3) +21

2. Distribute both sides: -6x+12+3x= -3x-9+21

3. Simplify both sides: -3x+12=-3x+12

4. This equation is true for all values, or infinity, because the equation is the same on both sides

Let me know if you need further explanation. I hope this helps.

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3 years ago
HELLPP!! Find the value of x that makes line m parallel to line n:
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Step-by-step explanation:

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Direct mail advertisers send solicitations​ ("junk mail") to thousands of potential customers in the hope that some will buy the
Arte-miy333 [17]

Answer:

The 90% confidence interval for the percentage of people the company contacts who may buy something is between 10.82% and 14%

Step-by-step explanation:

In a sample with a number n of people surveyed with a probability of a success of \pi, and a confidence level of 1-\alpha, we have the following confidence interval of proportions.

\pi \pm z\sqrt{\frac{\pi(1-\pi)}{n}}

In which

z is the zscore that has a pvalue of 1 - \frac{\alpha}{2}.

For this problem, we have that:

n = 1160, \pi = \frac{144}{1160} = 0.1241

90% confidence level

So \alpha = 0.1, z is the value of Z that has a pvalue of 1 - \frac{0.1}{2} = 0.95, so Z = 1.645.

The lower limit of this interval is:

\pi - z\sqrt{\frac{\pi(1-\pi)}{n}} = 0.1241 - 1.645\sqrt{\frac{0.1241*0.8759}{1160}} = 0.1082

The upper limit of this interval is:

\pi + z\sqrt{\frac{\pi(1-\pi)}{n}} = 0.1241 + 1.645\sqrt{\frac{0.1241*0.8759}{1160}} = 0.14

The 90% confidence interval for the percentage of people the company contacts who may buy something is between 10.82% and 14%

3 0
3 years ago
10.4% of what number is 7.02
Ainat [17]
<span>The correct answer is 67.5.

Explanation<span>:
10.4%=10.4/100=0.104.

We are finding 10.4% of an unknown number, so this gives us
0.104x=7.02.

To solve this, divide both sides by 0.104:
0.104x/0.104=7.02/0.104
x=67.5</span></span>
5 0
3 years ago
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