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3 years ago

The image shown here shows a scale drawing of the average seventh grader's foot next to the world's largest foot.

Mathematics

1 answer:

Artemon [7]3 years ago

7 0

Answer:

If you are estimating....

Step-by-step explanation:

if the small foot is 10in then the bigger foot must be around 12-13inchs considering on how big it is to the little foot, so about 13 inches

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what are the length and width of a rectangular traffic sign if the length exceeds the width by 24 inches and the perimeter by 12

madreJ [45]

Answer:

<h2>length = 44 in, width = 20 in</h2>

Step-by-step explanation:

$\text{The formula of a perimeter of a rectangle:}\\\\P=2(l+w)\\\\l-length\\w-width\\\\\text{We have}\ l=(w+24)\ in,\ P=128\ in\\\\\text{Substitute:}\\\\128=2(w+24+w)\qquad\text{divide both sides by 2}\\\\64=2w+24\qquad\text{subtract 24 from both sides}\\\\40=2w\qquad\text{divide both sides by 2}\\\\20=w\to w=20\ in\\\\l=20+24=44\ in$

7 0

3 years ago

HELP HELP HELP I will give all my points

olganol [36]

Answer:

1/4 of a foot.

Step-by-step explanation:

This can't be a square because all sides of a square are equal. This is a rectangle.

Length = area / width.

= (8/12) / (8/3) (because 2 2/3 = 8/3)

= 1/4 feet.

This is really the width as by definition length is greater than width.

6 0

3 years ago

Members of a soccer team suspect the coin used for the coin toss at the beginning of their games is unfair. They believe it turn

Vilka [71]

Answer:

The p-value is 0.0013. He should reject the null in favor of the alternative.

Step-by-step explanation:

We are given that Members of a soccer team suspect the coin used for the coin toss at the beginning of their games is unfair. They believe it turns up tails less often than it should if it were fair.

The coach of the team decides to flip the coin 100 times and count the number of tails. His trial results in 35 tails.

Let p = proportion of occurrence of tail.

SO, Null Hypothesis, $H_0$ : p = 0.50 {means that it turns up tails equal to that it should if it were fair}

Alternate Hypothesis, $H_A$ : p < 0.50 {means that it turns up tails less often than it should if it were fair}

The test statistics that would be used here One-sample z-test for proportions;

T.S. = $\frac{\hat p-p}{\sqrt{\frac{ p(1-p)}{n} } }$ ~ N(0,1)

where, $\hat p$ = sample proportion of tails occurrence = $\frac{35}{100}$ = 0.35

n = sample of trails = 100

So, the test statistics = $\frac{0.35-0.50}{\sqrt{\frac{0.50(1-0.50)}{100} } }$

= -3

The value of z test statistics is -3.

Also, P-value of the test statistics is given by;

P-value = P(Z < -3) = 1 - P(Z $\leq$ 3)

= 1 - 0.9987 = 0.0013

Since, the P-value of test statistic is less than the level of significance as 0.0013 < 0.01, so we have sufficient evidence to reject our null hypothesis as it will fall in the rejection region due to which we reject our null hypothesis.

Therefore, we conclude that it turns up tails less often than it should if it were fair.

4 0

4 years ago

I dont know how to do this question please help!

Elden [556K]

Answer: 1/6

Step-by-step explanation: I think you multiply 3 times 3 because the other circle circle has an option the first doesn't have have.

7 0

2 years ago

What is descriptive language

mixer [17]

Descriptive language is vivid and specific, and helps someone imagine a scene he didn't witness. ... The word descriptive comes from the Latin descript-, meaning "written down." Something that is descriptive uses an account of words to give us a sense of what it's like.

3 0

3 years ago