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Westkost [7]
2 years ago
9

Four pieces of rope of unknown (but equal) length and 10 more feet of rope are attached together. The resulting rope is 30 feet

long.
Draw a diagram in your notebook to represent this problem. What algebraic equation could you write to solve this?
Mathematics
1 answer:
kompoz [17]2 years ago
4 0

Answer:

4x + 10 = 30

Step-by-step explanation:

The four unknown pieces of rope are said to be an equal length, so each piece will be represented by x. Now there is another 10 feet of rope that is attached, and that all together equals 30 feet. The equation is:

4x + 10 = 30

4x = 20

x = 5

(I'm so sorry I can't draw a diagram for you, but I hope you will be able to using the equation shown above!)

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Most adults would not erase all of their personal information online if they could. A software firm survey of 480 randomly selec
Westkost [7]

Answer:

-7.90

Step-by-step explanation:

Let's write the null hypothesis (H0) and alternative hypothesis (Ha) from the claim statement

P = population proportion of adults who would erase all of their personal information online if they could

H_{0}:P=0.5

H1 P< 0.5

Let's write the given information:

n = sample size = 480

sample proportion = \hat p = 0.35

formula of z test statistic for one sample proportion test is as follows:

Z=\frac{\hat p-P}{\sqrt{\frac{P\times(1-P)}{n}}}

plug the above values in the above formula we get

Z =\frac{0.35-0.5}{\sqrt{\frac{0.35(1-0.5)}{480}}}=Z=-7.85584

So that the test statistic value is -7.90 (Rounded up to two decimal places)

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Step-by-step explanation:

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ivanzaharov [21]

Answer:

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Step-by-step explanation:

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Answer:

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Step-by-step explanation:

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