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bija089 [108]
3 years ago
9

The balance in your bank account is $720.50. You use your debit card for purchases of $45, $82, and $22.25. Then, you deposit $9

8.45 in the account. What is the new balance of your account?
Mathematics
1 answer:
myrzilka [38]3 years ago
7 0

Answer:

669 dollars and 70 cents

Step-by-step explanation:

just minus all the money spent and add the money added

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14. Higher Order Thinking Mr. Kent
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Answer:

6 hrs and 20 min

Step-by-step explanation:

7x(5/6)+(3/6)=35/6+3/6=38/6

38/6 simplified is 6 2/6 or 6 1/3

in hrs and minutes, this is 6 hrs and 20 minutes

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Kiran wrote f(x) = (x − 3)(x - 7) as an example of a function whose graph has x-
bezimeni [28]
The x intercepts were supposed to be x = 3, 7
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What is an angle that measures 1/2 turn
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An angle that measures 1/2 turn is 180 degree angle 
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Tina equally shares 8 cookies among herself and her 4 friends. which fraction shows how many cookies each person gets
Over [174]

Answer: 1 3/5

Step-by-step explanation:

if you have 8 cookies and want to share it with 5 total people you divide it so 8/5 is 1.6

6 0
3 years ago
Data on IQ for 33 first graders are given as follows: 82, 96, 99, 102, 103, 103, 106, 107, 108, 108, 108, 108, 109, 110, 110, 11
Dahasolnce [82]

Answer:

\bar X = \frac{\sum_{i=1}^n x_i}{n}

Where n represent the sample size, on this case n =33. If we use this formula we got:

\bar X = 113.727

And for this case we know that is the best estimator since is an unbiased estimator for the true population mean since we have this:

E(\bar X) = E(\frac{\sum_{i=1}^n x_i}{n})= \frac{1}{n} \sum_{i=1}^n E(X_i) = \frac{n\mu}{n} = \mu

Step-by-step explanation:

For this case we have the following values given:

82, 96, 99, 102, 103, 103, 106, 107, 108, 108, 108, 108, 109, 110, 110, 111, 113, 113, 113, 113, 115, 115, 118, 118, 119, 121, 122, 122, 127, 132, 136, 140, 146

And we want to estimate the mean value of IQ for the conceptual population.

For this case we can use as estimator for the population mean the sample mean. We know that the sample mean is given by this formula:

\bar X = \frac{\sum_{i=1}^n x_i}{n}

Where n represent the sample size, on this case n =33. If we use this formula we got:

\bar X = 113.727

And for this case we know that is the best estimator since is an unbiased estimator for the true population mean since we have this:

E(\bar X) = E(\frac{\sum_{i=1}^n x_i}{n})= \frac{1}{n} \sum_{i=1}^n E(X_i) = \frac{n\mu}{n} = \mu

5 0
3 years ago
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