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3 years ago

Why reading a decimal number correctly help to write it as an equivalent fraction?

Mathematics

1 answer:

Nikitich [7]3 years ago

8 0

Answer:

Step-by-step explanation:

Well, I mean, if you read a decimal incorrectly, what's the point of the fraction if the fraction will end up being incorrect?

Reading 0.5 as 5 will have you write 5/1 instead of 1/2.

So yeah, kinda detrimental.

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Your television has a height of 20 inches and a length of 21 inches. What is the length of the diagonal?

Liula [17]

Answer:

Step-by-step explanation:

You take the two sides and make them to the second power so 20 would be 400 and 21 would be 441. You add those numbers to get 841. Than the square root of 841 is the answer which is 29

7 0

2 years ago

A piece of copper with a volume of 8.25 cm³ has a mass of 73.92 g. A piece of iron with a volume of 5 cm³ and has a mass of 39.3

skad [1K]

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4 0

3 years ago

Can someone please help me it’s very important please ASAP

ozzi

The answer to this question is c)

7 0

2 years ago

Find the value of x in the isosceles triangle shown below.

dybincka [34]

USING PYTHAGORAS THEORAM,

x²+3²= 5²

x²+9= 25

x²= 25-9 = 16

x= √16

x= 4

OPTION D

6 0

2 years ago

It is known that the population variance equals 484. With a .95 probability, the sample size that needs to be taken to estimate

Hitman42 [59]

Answer:

The minimum sample size is n = 75 so that the desired margin of error is 5 or less.

Step-by-step explanation:

We are given the following in the question:

Population variance = 484

Standard deviation =

$\sigma^2 = 484\\\sigma =\sqrt{484} = 22$

Confidence level = 0.95

Significance level = 0.05

Margin of error = 5

Formula:

Margin of error =

$E = z\times \dfrac{\sigma}{\sqrt{n}}\\\\n = (\dfrac{z\times \sigma}{E})^2$

$z_{critical}\text{ at}~\alpha_{0.05} = 1.96$

Putting values, we get

$E\leq 5\\\\1.96\times \dfrac{22}{\sqrt{n}} \leq 5\\\\\sqrt{n} \geq 1.96\times \dfrac{22}{5}\\\\n \geq (1.96\times \dfrac{22}{5})^2\\\\n \geq 74.373$

Thus, the minimum sample size is n = 75 so that the desired margin of error is 5 or less.

3 0

2 years ago