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Anastasy [175]
2 years ago
6

Angelina was given $4000 when she turned 3 years old. Her parents

Mathematics
1 answer:
joja [24]2 years ago
3 0

Answer:

234

Step-by-step explanation:

x=4+23

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The figure shows a square and 4 congruent isosceles triangles. If the length of leg x is 12 feet, what is the length in feet of
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wher eis the

Step-by-step explanation:

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2 years ago
Read 2 more answers
A construction worker is sent to the store to buy more than 30 lb of roofing nails. The nails are sold in 5 lb boxes and 10 lb b
trapecia [35]

Answer:

The answer is A: 5x + 10y > 30. That is, the combination of boxes must be greater than 30 since the requirement is to have more than 30 lb of nails.

Step-by-step explanation:

The worker can buy a combination of boxes, as long as the total is greater than 30 lb. Multiply 5 lb by x and add that to 10 lb times y to get the total, which must exceed 30 lb.

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2 years ago
10. A manufacturer wanted to know if more coupons would be redeemed if they were mailed to the
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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

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1 year ago
Which lists the ratios in order from greatest to least? 23:24, 11:12, 7:8 23.24, 7:8, 11:12 7:8, 23:24, 11:12 7:8, 11:12, 23:24​
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Answer:I I I I I I I I I I I I I I I I I I I I I I I I I I I I I I I I I I I. I

Step-by-step explanation:

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Parallelogram or not ?
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I think so

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here's here's the definition of a parallelogram

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