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3 years ago

Can an area of a polygon be zero? true or false

Mathematics

2 answers:

Elena L [17]3 years ago

8 0

it's has to be false

Nata [24]3 years ago

4 0

False. If the area is 0 that means there is nothing there, therefore the area of a polygon cannot be zero.

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The ability of lizards to recognize their predators via tongue flicks can often mean life or death for lizards. Seventeen juveni

Sloan [31]

Answer:

Confidence level is (380.7133, 533.2867)

Step-by-step explanation:

Responses in number of tongue flicks per 20 minutes of lizards, are: 727,217, 268, 438, 625, 319, 200, 591, 574, 727, 693, 336, 302, 761, 268, 353, 370

n = 17

Mean (μ) is:

$\mu=\frac{{\Sigma}x}{n} = \frac{727+217+ 268+ 438+ 625+ 319+ 200+ 591+ 574+ 727+ 693+ 336+ 302+ 761+ 268+ 353+ 370}{17} = 439.3529$

Standard deviation (σ) is:

$\sigma=\sqrt{\frac{\Sigma(x-\mu^2)}{n} } =\sqrt{\frac{(727-457)^2+(217-457)^2+...+(370-457)^2}{17} } =191.2$

The confidence interval (c) = 90% = 0.9

$\alpha=1-0.9=0.1\\\frac{\alpha }{2} = 0.05\\Z_{\frac{\alpha }{2} }=1.64$

Margin of error (e) = $=Z_{\frac{\alpha}{2} }*\frac{\sigma}{\sqrt{n} }=1.64*\frac{191.2}{\sqrt{17} }=76.2867$

Confidence level = μ ± e = 457 ± 76.2867 = (380.7133, 533.2867)

8 0

4 years ago

Knowing that a is inversely proportional to b2 and when b=4 a is equal to 5, find the value of a when b=4/5

Flauer [41]

Answer:

a = 16

Step-by-step explanation:

inversely proportional

y = k/x

a = k/b

5 = k/4

solve for k

multiply by 4 on each side

20 =k

a = 20b

if b = 4/5

a = 20 * 4/5

a = 16

8 0

3 years ago

Helppppppppppppppppppppppp pleaseeeeeee

kogti [31]

Answer:

12.57

Step-by-step explanation:

C=2πr

2π2

4π

12.57

3 0

3 years ago

Which expression is a polynomial? y-5-7 8z-2 6y2+4 14*-2

Liono4ka [1.6K]

Answer:

irdc

Step-by-step explanation:

7 0

4 years ago

Answers

Naddika [18.5K]

Answer:

$618.95 rounded up. 0.004c

£388.09 on rent and $230.84 food

We can round up and state $619 to nearest tenth.

Or leave as non rounded Total $618.93

Step-by-step explanation:

27% of 1,437.40=388.09

1,437.40 - 388.09 = 1049.31

22% of 1049.31 = 230.8482

$230,84 Shown here, as not round up or down as 230.84 as £388.09 was not rounded up from 388.098.

= $618.95 rounded up. 0.004c

5 0

3 years ago