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2 years ago

What is 1/4 divided by 9/10 rewritten with an important fraction?

Mathematics

1 answer:

lutik1710 [3]2 years ago

8 0

Step-by-step explanation:

${:}\hookrightarrow\sf \dfrac {1}{4}\div \dfrac {9}{10}$

${:}\hookrightarrow\sf \dfrac {1}{4}\times \dfrac {10}{9}$

${:}\hookrightarrow\sf \dfrac {10}{36}$

${:}\hookrightarrow\sf \dfrac {5}{18}$

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Fran has 18 paperback books and 24 hardcover books. What is the ratio of hardcover to paperback books?

kondaur [170]

The correct answer is 3:4

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2 years ago

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Rudik [331]

-x^2 + 4x + 12 = -3x + 24

-> x^2 - 7x + 12 = 0

-> (x-3)(x-4) = 0

-> x= 3 or 4

so y = 15 when x = 3, y = 12 when x = 4

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3 years ago

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Escribe el número que corresponda a la escritura polinomica 8x10³+4x10²+0x10¹+9x10⁰

Molodets [167]

Answer:

8409 es 8×10³ es 8 4×10² es 4 0×10¹ es 4 9×10⁰ es 9

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2 years ago

Assume the upper arm length of males over 20 years old in the United States is approximately Normal with mean 39.2 centimeters (

MAVERICK [17]

Answer:

The interval [32.6 cm, 45.8 cm]

Step-by-step explanation:

According with the <em>68–95–99.7 rule for the Normal distribution:</em> If $\large \bar x$ is the mean of the distribution and s the standard deviation, around 68% of the data must fall in the interval

$\large [\bar x - s, \bar x +s]$

around 95% of the data must fall in the interval

$\large [\bar x -2s, \bar x +2s]$

around 99.7% of the data must fall in the interval

$\large [\bar x -3s, \bar x +3s]$

So, the range of lengths that covers almost all the data (99.7%) is the interval

[39.2 - 3*2.2, 39.2 + 3*2.2] = [32.6, 45.8]

<em>This means that if we measure the upper arm length of a male over 20 years old in the United States, the probability that the length is between 32.6 cm and 45.8 cm is 99.7%</em>

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3 years ago

Can anybody help? this is a test pleasee..!

Evgen [1.6K]

Answer:

Step-by-step explanation:

so 20% is 160 and 10% of that is 16

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3 years ago