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2 years ago

A cylinder has a volume of 100cm and a radius

Mathematics

1 answer:

Dima020 [189]2 years ago

4 0

Answer:

1.27cm

Step-by-step explanation:

Volume(v) =100 cm

Radius(r) =5cm

Height(h) =?

Now,

Volume of cylinder (v) =¶r^2h

100 =22/7*5*5*h

100=78.57h

H=100/78.57

H=1.27cm

Height of cylinder is 1.27cm

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The lengths of pregnancies in a small rural village are normally distributed with a mean of 261 days and a standard deviation of

valina [46]

Answer:

(221.39, 300.61) and (255.2223, 266.7777)

Step-by-step explanation:

Given that X, the lengths of pregnancies in a small rural village are normally distributed with a mean of 261 days and a standard deviation of 17 days

Middle 98% would lie on either side of the mean with probability ±2.33 in the std normal distribution on either side of 0

Corresponding we have x scores as

Between $261-2.33*17$ and $261+2.33*17$

i.e. in the interval = (221.39, 300.61)

If sample size = 47, then std error of sample would be

$\frac{17}{\sqrt{47} }$

So 98% of pregnancies would lie between

$261-2.33*\frac{17}{\sqrt{47} }$ and $262+2.33*\frac{17}{\sqrt{47} }$

= (255.2223, 266.7777)

8 0

2 years ago

Doing odd jobs in America <br>2000$ How much will it take to earn?<br>I want to know time

kari74 [83]

Answer:

Below:

Step-by-step explanation:

20 Hour Per Week.....

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3 0

1 year ago

((81x^3 y^(-1/3))^1/4)/(x^2 y)^1/4 simplify

malfutka [58]

$\bf a^{\frac{{ n}}{{ m}}} \implies \sqrt[{ m}]{a^{ n}} \qquad \qquad
\sqrt[{ m}]{a^{ n}}\implies a^{\frac{{ n}}{{ m}}}
\\\\\\
\left.\qquad \qquad \right.\textit{negative exponents}\\\\
a^{-{ n}} \implies \cfrac{1}{a^{ n}}
\qquad \qquad
\cfrac{1}{a^{ n}}\implies a^{-{ n}}
\qquad \qquad 
a^{{{ n}}}\implies \cfrac{1}{a^{-{{ n}}}}\\\\
-------------------------------\\\\$

$\bf \cfrac{\left( 81x^3y^{-\frac{1}{3}} \right)^{\frac{1}{4}}}{(x^2y)^{\frac{1}{4}}}\implies \cfrac{81^{\frac{1}{4}}x^{3\cdot {\frac{1}{4}}}y^{-\frac{1}{3}\cdot {\frac{1}{4}}}}{x^{2\cdot {\frac{1}{4}}}y^{\frac{1}{4}}}\implies
\cfrac{81^{\frac{1}{4}}x^{\frac{3}{4}}y^{-\frac{1}{12}}}{x^{\frac{2}{4}} y^{\frac{1}{4}}}$

$\bf \cfrac{81^{\frac{1}{4}}x^{\frac{3}{4}}x^{-\frac{2}{4}}}{ y^{\frac{1}{4}}y^{\frac{1}{12}}}\implies \cfrac{(3^4)^{\frac{1}{4}}x^{\frac{3}{4}-\frac{2}{4}}}{y^{\frac{1}{4}+\frac{1}{12}}}\implies \cfrac{3^{4\cdot \frac{1}{4}}x^{\frac{1}{4}}}{y^{\frac{4}{12}}}\implies \cfrac{3^{\frac{4}{4}}x^{\frac{1}{4}}}{y^{\frac{1}{3}}}
\\\\\\
\cfrac{3\sqrt[4]{x}}{\sqrt[3]{y}}$

7 0

2 years ago

Help please <br><br> something+(-4)=-1

omeli [17]

The answer should be 3.

6 0

2 years ago

PLEASE HELP ME SHOW ME HOW U GOT YOUR ANSWER PLZ AND THANK U

lara [203]

Answer:

2/3

Step-by-step explanation:

There are 6 marbles in the jar

4 are not purple

P(not purple) = marbles that are not purple/ total marbles

= 4/6 = 2/3

3 0

2 years ago

Read 2 more answers