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3 years ago

Use the distributive property to write an equivalent expression -3(2x + 11)

1 answer:

4 0

Multiply the -3 by everything inside so do -3 x 2x which would be -6x then do -3 x 11 which is -33 so the equation would be -6x-33

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How many cubic feet of water can the following in ground swimming pool hold

pashok25 [27]

What pool? Any of these answers work when we don’t know what pool...

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3 years ago

Read 2 more answers

Helena's family drank 4,600 MILLILITERS of milk at breakfast

Kryger [21]

Answer:4.6 liter

Step-by-step explanation:

Given

Helena family is 4600 milliliter

and we know

1 liter is equal to 1000 ml

and 1 ml is equal to 0.001 m

So, 4600 ml is equal to

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3 years ago

Please help! ASAP I just need number 1

Goshia [24]

Answer:

no you can not make 1 into a triangle

Step-by-step explanation:

16 cm, 30 cm, 45 cm

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16 + 30 = 46

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3 years ago

It takes1/3 hour to produce 1 woomble.how many woomble could be produced in 9 hours?

MissTica

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3 years ago

Insurance companies are interested in knowing the population percent of drivers who always buckle up before riding in a car. The

Tems11 [23]

Answer:

The 84% confidence interval for the population proportion that claim to always buckle up is (0.74, 0.80).

Step-by-step explanation:

In a sample with a number n of people surveyed with a probability of a success of $\pi$ , and a confidence level of $1-\alpha$ , we have the following confidence interval of proportions.

$\pi \pm z\sqrt{\frac{\pi(1-\pi)}{n}}$

In which

z is the z-score that has a p-value of $1 - \frac{\alpha}{2}$ .

They randomly survey 387 drivers and find that 298 claim to always buckle up.

This means that $n = 387, \pi = \frac{298}{387} = 0.77$

84% confidence level

So $\alpha = 0.16$ , z is the value of Z that has a p-value of $1 - \frac{0.16}{2} = 0.92$ , so $Z = 1.405$ .

The lower limit of this interval is:

$\pi - z\sqrt{\frac{\pi(1-\pi)}{n}} = 0.77 - 1.405\sqrt{\frac{0.77*0.23}{387}} = 0.74$

The upper limit of this interval is:

$\pi + z\sqrt{\frac{\pi(1-\pi)}{n}} = 0.77 + 1.405\sqrt{\frac{0.77*0.23}{387}} = 0.8$

The 84% confidence interval for the population proportion that claim to always buckle up is (0.74, 0.80).

6 0

3 years ago