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agasfer [191]
3 years ago
9

Which best explains whether a triangle with side lengths 5cm 13cm and 12 cm is a right triangle

Mathematics
2 answers:
VMariaS [17]3 years ago
7 0

Answer: the awnser is 0 jk its not

Step-by-step explanation:

i just want point repete dkmkmkrfnjrjnnfrfr

aniked [119]3 years ago
4 0

Answer:

Yes, it can make a right triangle.

Step-by-step explanation:

We can use the Pythagorean Theorem to determine if the sides make a right triangle.

a^2+b^2=c^2

We are given the side lengths: 5cm, 13cm, and 12 cm.

13cm is the longest, so it would be 'c'.

5cm and 12cm will be 'a' and 'b'.

Let 5 be 'a', 12 be 'b', and 13 be 'c':

5^2+12^2=13^2\\\\\text{Solve the Exponents:}\\ \rightarrow 5^2=25\\\rightarrow 12^2=144\\\rightarrow 13^2=169\\\\25+144=169\\\boxed{169=169}

5cm, 13cm, and 12 cm would make a right triangle. It satisfies the Pythagorean Theorem.

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How many students must be randomly selected to estimate the mean weekly earnings of students at one college? We want 95% confide
kari74 [83]

Answer:

The sample of students required to estimate the mean weekly earnings of students at one college is of size, 3458.

Step-by-step explanation:

The (1 - <em>α</em>)% confidence interval for population mean (<em>μ</em>) is:

CI=\bar x\pm z_{\alpha/2}\times \frac{\sigma}{\sqrt{n}}

The margin of error of a (1 - <em>α</em>)% confidence interval for population mean (<em>μ</em>) is:

MOE=z_{\alpha/2}\times \frac{\sigma}{\sqrt{n}}

The information provided is:

<em>σ</em> = $60

<em>MOE</em> = $2

The critical value of <em>z</em> for 95% confidence level is:

z_{\alpha/2}=z_{0.05/2}=z_{0.025}=1.96

Compute the sample size as follows:

MOE=z_{\alpha/2}\times \frac{\sigma}{\sqrt{n}}

       n=[\frac{z_{\alpha/2}\times \sigma }{MOE}]^{2}

          =[\frac{1.96\times 60}{2}]^{2}

          =3457.44\\\approx 3458

Thus, the sample of students required to estimate the mean weekly earnings of students at one college is of size, 3458.

8 0
2 years ago
the area of a rectangular wall of a barn is 154 square feet. it's length is 8 feet longer than twice its width. find the length
Lady_Fox [76]

Answer:

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3 years ago
Madeline sold 200 tickets for a charter flight to Dallas. Some paid $200 for their tickets and some paid
4vir4ik [10]

Answer:

Let x = number of regular tickets sold.

Let y represent the number of student tickets sold.

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12x+8y≤20012x+8y≤200

x+y≤200x+y≤200

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hope this helps

Step-by-step explanation:

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2 years ago
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5 0
3 years ago
A store sold a total of 21,650 balls. It sold 11,795 baseballs It sold 4,150 fewer basketballs than baseballs. The rest of the b
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Answer:

The store sold 2,210 footballs.

Step-by-step explanation:

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