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2 years ago

The older square-shaped floppy diskettes measured 15 cm on each side. What was the diagonal length of a diskette?

Mathematics

1 answer:

Aloiza [94]2 years ago

5 0

Answer:

$15\sqrt{2}$

Step-by-step explanation:

The formula we can use is

$d=\sqrt{2} *a$

Where d is the length of the diagonal and a is the length of the side of the square

Since, the floppies are in square shape and side length is 15, so a = 15

We simply put it into the formula and get length of diagonal.

$d=\sqrt{2} *a\\d=\sqrt{2} *15\\d=15\sqrt{2}$

Hence, diagonal length is $15\sqrt{2}$

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garri49 [273]

Answer:

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Step-by-step explanation:

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2 years ago

The level of nitrogen oxides (NOX) in the exhaust after 50,000 miles or fewer of driving of cars of a particular model varies No

Greeley [361]

Answer:

For a level of 0.0174 or more of nitrogen oxide, the probability of fleet is 0.01.

Step-by-step explanation:

We are given the following information in the question:

Mean, μ = 0.02 g/mi

Standard Deviation, σ = 0.01 g/mi

Sample size, n = 81

We are given that the distribution of level of nitrogen oxides is a bell shaped distribution that is a normal distribution.

Standard error due to sampling:

$=\dfrac{\sigma}{\sqrt{n}} = \dfrac{0.01}{\sqrt{81}} = 0.0011$

Formula:

$z_{score} = \displaystyle\frac{x-\mu}{\sigma}$

We have to find the value of x such that the probability is 0.01

P(X > x)

$P( X > x) = P( z > \displaystyle\frac{x - 0.02}{0.0011})=0.01$

$= 1 -P( z \leq \displaystyle\frac{x - 0.02}{0.0011})=0.01$

$=P( z \leq \displaystyle\frac{x - 0.02}{0.0011})=0.99$

Calculation the value from standard normal z table, we have,

$\displaystyle\frac{x - 0.02}{0.0011} = -2.326\\\\x = 0.0174$

For a level of 0.0174 or more of nitrogen oxide, the probability of fleet is 0.01.

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2 years ago

The price of one share of a stock increased by $3 on Monday and then decreased by $4 on Tuesday. Which expression shows the chan

grigory [225]

Answer:

I think it's 3+(-4)

Hope this helps

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2 years ago

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Answer:

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Step-by-step explanation:

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Percent decrease:

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1 year ago

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3 years ago