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marta [7]
2 years ago
10

All rectangles have four right angles and opposite sides that are equal in length and parallel.

Mathematics
1 answer:
Paraphin [41]2 years ago
4 0

Answer:

C. The bottom answer.

Step-by-step explanation:

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Mr. Osmond bought a computer that cost $2,500. How much did he pay for the computer if the sales tax rate was 7%?
Oduvanchick [21]

Answer:

$2,675

Step-by-step explanation:


7 0
3 years ago
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A triangle with side lengths of 32, 60 and 68 is a right triangle?<br> true or false
Troyanec [42]
I believe that it would come out to become true
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3 years ago
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PLS Help me! This graph shows the outside temperature (in degrees Celsius) over the course of 12 hours, starting at midnight (x
viktelen [127]

Answer:

The domain is the set of all possible x-values

  • Domain is the time here

The range is the resulting y-values

  • The range is the outside temperature is here
  • Function is decreasing between x= 0 to 3
  • It means the temperature is decreasing between midnight and 3 AM

5 0
3 years ago
10. A manufacturer wanted to know if more coupons would be redeemed if they were mailed to the
Mandarinka [93]

Using the t-distribution, it is found that the data does not provide convincing evidence that the mean number is greater when the coupons were addressed to a female.

<h3>What are the hypothesis tested?</h3>

At the null hypothesis, it is tested if there is no difference, that is, the mean is of 0, hence:

H_0: \mu = 0

At the alternative hypothesis, it is tested if the mean number is greater for females, that is, the mean is greater than 0, hence:

H_1: \mu > 0

<h3>What is the test statistic?</h3>

The test statistic is given by:

t = \frac{\overline{x} - \mu}{\frac{s}{\sqrt{n}}}

The parameters are:

  • \overline{x} is the sample mean.
  • \mu is the value tested at the null hypothesis.
  • s is the standard deviation of the sample.
  • n is the sample size.

In this problem, the parameters are given as follows:

\overline{x} = 1.5, \mu = 0, s = 4.75, n = 50.

Hence, the test statistic is given by:

t = \frac{\overline{x} - \mu}{\frac{s}{\sqrt{n}}}

t = \frac{1.5 - 0}{\frac{4.75}{\sqrt{50}}}

t = 2.23

<h3>What is the conclusion?</h3>

Considering a <em>right-tailed test</em>, as we are testing if the mean is greater than a value, with a <em>significance level of 0.01 and 50 - 1 = 49 df</em>, the critical value is given by t^{\ast} = 2.4.

Since the test statistic is less than the critical value for the right-tailed test, the data does not provide convincing evidence that the mean number is greater when the coupons were addressed to a female.

More can be learned about the t-distribution at brainly.com/question/26454209

5 0
1 year ago
Helena Bought envelopes of flowers seeds that each cost the same. She spent a total of $36 . Find 3 possible costs per envelope
Irina-Kira [14]
1. She could get 9 envelopes for 4 dollars each (or the other way around)

2. She could get 12 envelopes for 3 dollars each (or the other way around)

3. She could get 18 envelopes for 2 dollars each (or the other way around)
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