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2 years ago

13. Find the perimeter.

Mathematics

2 answers:

kherson [118]2 years ago

4 0

28
3 + 8 + 5 + 4 + 4 + 4

KengaRu [80]2 years ago

3 0

The answer is 22
2+3+8+5+4.

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I’m confused on this one

Alenkinab [10]

Remark

I would have had the answer a whole lot sooner if I would have read the question properly. The figure in the circle is called a cyclic quadrilateral. It has the odd property that the angles that are opposite each other add up to 180o.

So DEB + DCB = 180o

DEB = 180 - 87

DEB = 93o

Note: The arcs marked 60 and 76 have nothing whatever to do with this problem.

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3 years ago

Help quickkkkkk- I’m terrible at dis stuff

solong [7]

Answer:

Step-by-step explanation:

(x-3)² - 7 = (5-3)²-7

= 2²-7

= 4 - 7

= -3

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3 years ago

In the diagram, the measure of angle 8 is 124°, and the measure of angle 2 is 84°.

Darina [25.2K]

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(A) 56 on ed genuity

Step-by-step explanation:

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3 years ago

Read 2 more answers

You want to create a 99% confidence interval with a margin of error of .5. Assuming the population standard deviation is equal t

miss Akunina [59]

Answer:

Sample size minimum is 60

Step-by-step explanation:

given that you want to create a 99% confidence interval with a margin of error of .5.

The population standard deviation is equal to 1.5

i.e. $\sigma = 0.5$

Confidence level = 99%

Since population std deviation is known, we can use Z critical value for finding margin of error

Z critical value for 99% = 2.58

Margin of error = $2.58*\frac{1.5}{\sqrt{n} }$

Equate this to 0.5 and solve for n

$2.58*\frac{1.5}{\sqrt{n} }=0.5\\\sqrt{n} =7.74\\n =59.90\\n=60$

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3 years ago

A basketball has a surface area of 1810 cm. find its volume<br>

julia-pushkina [17]

Answer:

V≈7240.89

Step-by-step explanation:

Use the formula V=A^(3/2) / $6\sqrt[n]{pi}$

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3 years ago