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2 years ago

HellpppNeed help please urgent

Mathematics

1 answer:

Novay_Z [31]2 years ago

4 0

Answer:

the answer is 63.59m²

Step-by-step explanation:

$radius = \frac{diameter}{2} \\ = \frac{3}{2} \\ = \frac{9}{2} (since \:1cm = 3m \: so \: 3cm = 9m) \\ = 4.5 \\ area \: of \: circle = \pi {r}^{2} \\ = 3.14 \times (4.5) {}^{2} \\ = 3.14 \times 20.25 \\ = 63.585 {m}^{2}$

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X + 15 - 4<br> Please help ty

IrinaK [193]

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3 years ago

Marcia bought a 50 foot roll she used two 8 and 5/6 how much if left

inna [77]

Answer:

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Step-by-step explanation:

I suspect two 8 means 8x2, but if it means 2+8, I'll add another answer.

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3 years ago

At the end of January, Garrett had $176 in his

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Answer:

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3 years ago

Approximately ___% of a district’s students that are eligible for free and reduced meals are homeless at any given time.

Ludmilka [50]

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<h3>What is a Percentage?</h3>

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Hence, we can see that although your question is incomplete, I gave you a general overview of percentages for a better understanding of the concept.

Read more about percentages here:

brainly.com/question/16865197

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1 year ago

Process control is nothing more or less than monitoring quality as the work is being performed. Perhaps the most widely adopted

ella [17]

Answer:

a. Grand Mean = 2.799

b. Standard Deviation = 0.01387

c. Standard Error = 0.0016

d. The range with a Z score of 3 = (2.75739, 2.84061)

Step-by-step explanation:

a. Grand mean :

Given that

Sum of 80 values = 223.91

Total observation = 80

Grand mean = 223.91/80 = 2.799

b. With the excel command "STDEV[range of cells]", we get the standard deviation as = 0.01387

c. Standard error = Standard deviation / root of n

$= 0.01387/\sqrt{80}\\ = 0.0016$

d. The range with a Z score of 3 :

lower limit = mean - (3 * SD) = 2.799 - (0.04161) = 2.75739

upper limit = mean + (3 * SD) = 2.799 + (0.04161) = 2.84061

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3 years ago