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3 years ago

The volume of a cylinder with a height of 25cm and a radius of 20cm

Mathematics

1 answer:

pentagon [3]3 years ago

7 0

Answer:

5652 cm³

Step-by-step explanation:

V = 2πr² + 2πrh

= (2 × 3.14 × 3.14 × 20 ×20) + (2 × 3.14 × 20 × 25)

= 2512 + 3140

= 5652 cm³

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. Find the simple interest on a $2,219.00 principal, deposited for 6 years at a

koban [17]

Answer:

SI=PTR/100

SI=2129*6*1.91/100

SI=24398.34/100

SI=243.9834$

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3 years ago

A resident of Bayport claims to the City Council that the proportion of Westside residents

Kazeer [188]

Answer:

The test statistics is $z = -1.56$

The p-value is $p-value = 0.05938$

Step-by-step explanation:

From the question we are told

The West side sample size is $n_1 = 578$

The number of residents on the West side with income below poverty level is $k = 76$

The East side sample size $n_2=688$

The number of residents on the East side with income below poverty level is $u = 112$

The null hypothesis is $H_o : p_1 = p_2$

The alternative hypothesis is $H_a : p_1 < p_2$

Generally the sample proportion of West side is

$\^{p} _1 = \frac{k}{n_1}$

=> $\^{p} _1 = \frac{76}{578}$

=> $\^{p} _1 = 0.1315$

Generally the sample proportion of West side is

$\^{p} _2 = \frac{u}{n_2}$

=> $\^{p} _2 = \frac{112}{688}$

=> $\^{p} _2 = 0.1628$

Generally the pooled sample proportion is mathematically represented as

$p = \frac{k + u}{ n_1 + n_2 }$

=> $p = \frac{76 + 112}{ 578 + 688 }$

=> $p =0.1485$

Generally the test statistics is mathematically represented as

$z = \frac{\^ {p}_1 - \^{p}_2}{\sqrt{p(1- p) [\frac{1}{n_1 } + \frac{1}{n_2} ]} }$

=> $z = \frac{ 0.1315 - 0.1628 }{\sqrt{0.1485(1-0.1485) [\frac{1}{578} + \frac{1}{688} ]} }$

=> $z = -1.56$

Generally the p-value is mathematically represented as

$p-value = P(z < -1.56 )$

From z-table

$P(z < -1.56 ) = 0.05938$

$p-value = 0.05938$

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4 years ago

Tommy and his wife went to the store and bought groceries there's some total was $143.50 if the sales tax was 8% what was the to

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Answer:

154.98

Step-by-step explanation:

* means multiplication

143.50*.08=11.48

143.50+11.48=$154.98

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3 years ago

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3 years ago

Find the quotient and simplify

soldi70 [24.7K]

Answer:

$\large\boxed{\dfrac{n^2}{4}}$

Step-by-step explanation:

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3 years ago