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Colt1911 [192]
3 years ago
6

If a four sided figure has four right angles, then it has four congruent sides. Prove it wrong.

Mathematics
1 answer:
nekit [7.7K]3 years ago
8 0
A rectangle is a four sided figure with four right angles but it does not have congruent sides because two of its sides are longer than the other two.
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Use the Rational Root Theorem to list all possible rational roots for the equation.
kicyunya [14]
The answer would be B and here’s the steps :)

5 0
2 years ago
in the unted states, the height of men are normally distributed with the mean 69 inches and standard deviation 2.8 inches. If 16
yaroslaw [1]

Answer:

Probability that their mean height is less than 68 inches is 0.0764.

Step-by-step explanation:

We are given that in the united states, the height of men are normally distributed with the mean 69 inches and standard deviation 2.8 inches.

Also, 16 men are randomly selected.

<em>Let </em>\bar X<em> = sample mean height</em>

The z-score probability distribution for sample mean is given by;

              Z = \frac{\bar X-\mu}{\frac{\sigma}{\sqrt{n} } }  ~ N(0,1)

where, \mu = population mean height = 69 inches

            \sigma = population standard deviation = 2.8 inches

            n = sample of men = 16

The Z-score measures how many standard deviations the measure is away from the mean. After finding the Z-score, we look at the z-score table and find the p-value (area) associated with this z-score. This p-value is the probability that the value of the measure is smaller than X, that is, the percentile of X.

So, probability that the mean height of 16 randomly selected men is less than 68 inches is given by = P(\bar X < 68 inches)

 P(\bar X < 68 inches) = P( \frac{\bar X-\mu}{\frac{\sigma}{\sqrt{n} } } < \frac{68-69}{\frac{2.8}{\sqrt{16} } } ) = P(Z < -1.43) = 1 - P(Z \leq 1.43)

                                                           = 1 - 0.9236 = 0.0764

<em>Now, in the z table the P(Z  x) or P(Z < x) is given. So, the above probability is calculated by looking at the value of x = 1.43 in the z table which has an area of 0.92364.</em>

Therefore, probability that their mean height is less than 68 inches is 0.0764.

3 0
3 years ago
Which expression has the smallest value?<br> A. |15|<br> B. |-24|<br> C. |-31|<br> D. |42|
Dennis_Churaev [7]
-31 Because it is a negative number
Explaination I’m smart Thank me cause I’m right
6 0
3 years ago
Read 2 more answers
a jar contains 30 red, 40 blue, and 50 white buttons. you pick one button at random, find the probability that it is red or blue
abruzzese [7]

Answer:

0.58 rounded to the nearest hundredths

Step-by-step explanation:

30+40+50=120

now add red+blue

30+40=70

70/120

pls mark me brainliest

5 0
3 years ago
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Use rounding or compatible numbers to estimate the difference 762- 332
Ber [7]
You would round 762 to 800, then you would round 332 to 300. You would take those 2 numbers and put them in the questions and it should look like this:
800-300, then you would subtract
Good luck!
5 0
3 years ago
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