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3 years ago

8

Tina Zappa purchased a three-pack of facial tissues for $2.98. What is the unit price per pack rounded to the nearest tenth of a

cent?

2 answers:

alexandr1967 [171]3 years ago

8 0

2.98/3=.993 repeating
=$99.3 cents per

Mashcka [7]3 years ago

4 0

Answer:

$.0993 per pack. wrong format dude.

Step-by-step explanation:

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In a certain city of several million people, 7.7% of the adults are unemployed. If a random sample of 300 adults in this city is

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Answer: 0.2643

Step-by-step explanation:

Given : The proportion of adults are unemployed : p=0.077

The sample size = 300

By suing normal approximation to the binomial , we have

$\mu=np=300\times0.077=23.1$

$\sigma=\sqrt{np(1-p)}=\sqrt{300\times0.077(1-0.077)}\\\\=4.61749932323\approx4.62$

Now, using formula $z=\dfrac{x-\mu}{\sigma}$ , the z-value corresponding to 26 will be :-

$z=\dfrac{26-23.1}{4.62}\approx0.63$

Using standard distribution table for z , we have

P-value= $P(z\geq0.63)=1-P(z$

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Hence, the probability that at least 26 in the sample are unemployed =0.2643

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Ierofanga [76]

Answer:

D

Step-by-step explanation:

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......since the base 7 is the same, when u multiply them, you should add the exponents and keep 7 as it is. That will be 7^4, which in equivalent to ans D(7^2)^2.

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