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gavmur [86]
2 years ago
6

Identify the percent rate of change in exponential function y=(0.9)

Mathematics
2 answers:
Lapatulllka [165]2 years ago
6 0
The answerrr isss 90
Papessa [141]2 years ago
5 0

Answer:

90

Step-by-step explanation:

0.9 multiplied by 100 to turn it into a percentage is 90.

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A toy car costing $50 is reduced by 10% in the sale. how much money is it reduced by?
atroni [7]

Answer:

$5

Step-by-step explanation:

10% = 10/100 = 1/10.

1/10 of 50 = 5

5 0
3 years ago
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A random sample of size 15 taken from a normally distributed population revealed a sample mean of 75 and a sample variance of 25
GREYUIT [131]

Answer:

The upper limit of a 95% confidence interval for the population mean would equal 83.805.

Step-by-step explanation:

The standard deviation is the square root of the variance. Since the variance is 25, the sample's standard deviation is 5.

We have the sample standard deviation, not the population, so we use the t-distribution to solve this question.

T interval:

The first step to solve this problem is finding how many degrees of freedom, we have. This is the sample size subtracted by 1. So

df = 15 - 1 = 14

Now, we have to find a value of T, which is found looking at the t table, with 14 degrees of freedom(y-axis) and a confidence level of 0.95(t_{95}). So we have T = 1.761

The margin of error is:

M = T*s = 1.761*5 = 8.805.

The upper end of the interval is the sample mean added to M. So it is 75 + 8.805 = 83.805.

The upper limit of a 95% confidence interval for the population mean would equal 83.805.

4 0
3 years ago
Multiply.<br><br> (−2.04)(4.3)<br><br> PLEASE HURRY
Valentin [98]

Answer:

The answer is -8.772

Step-by-step explanation:

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3 years ago
Explain how 6/12 and 4/8 are equal fractions
bogdanovich [222]

6/12 and 4/8 are equal fractions, as, when simplified, they share a simplified fraction.

Note that what you do to the denominator, you do to the numerator. Find common denominators for both fractions:

(4/8)/(2/2) = 2/4

(6/12)/(3/3) = 2/4

As you can tell, when they share a common denominator (4), the numerators are the same as well (3).

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3 years ago
How does the brain get stronger when it takes on challenges?
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<h2><em>Hello ! :)</em></h2>

<h3>I found this on google..</h3>

<h2><u>"The nerve cells have branches connecting them to other cells in a complicated network. Communication between these brain cells is what allows us to think and solve problems. When you learn new things, these tiny connections in the brain actually multiply and get stronger."</u></h2>
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3 years ago
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