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3 years ago

Use an inequality symbol (<,>,=,<_) to compare -3+7____-10-2

Mathematics

1 answer:

Oliga [24]3 years ago

6 0

Answer:

Step-by-step explanation:

-3+7= 4

-10-2= -12

4> -12

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To make four cakes, Dena used 6 cups of sugar. Using the same recipe, how much sugar does she need to make one cake?

Fantom [35]

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6 cups/ 4 cakes
= 1.5 cups per cake

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A researcher wants to estimate the percentage of all adults that have used the Internet to seek pre-purchase information in the

Lubov Fominskaja [6]

Answer:

The required sample size for the new study is 801.

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 zscore that has a pvalue of $1 - \frac{\alpha}{2}$ .

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

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This means that $\pi = 0.25$

95% confidence level

So $\alpha = 0.05$ , z is the value of Z that has a pvalue of $1 - \frac{0.05}{2} = 0.975$ , so $Z = 1.96$ .

What is the required sample size for the new study?

This is n for which M = 0.03. So

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

$0.03 = 1.96\sqrt{\frac{0.25*0.75)}{n}}$

$0.03\sqrt{n} = 1.96\sqrt{0.25*0.75}$

$\sqrt{n} = \frac{1.96\sqrt{0.25*0.75}}{0.03}$

$(\sqrt{n})^2 = (\frac{1.96\sqrt{0.25*0.75}}{0.03})^2$

$n = 800.3$

Rounding up:

The required sample size for the new study is 801.

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2 years ago

Write g-12 in words

larisa [96]

I'm guessing you are looking for an algebraic sentence. In that case, 12 less than g would make sense, or 12 subtracted from g

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2 years ago

A bakery offers a sale price of $3.45 for 4 muffins. What is the price per dozen?

Vlad [161]

Answer:

Cost of 4 muffins = $3.45

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Cost of 3 sets of muffins = $3.45 x3 = $10.35

Step-by-step explanation:

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2 years ago

Help and fast

kolbaska11 [484]

Answer:

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Step-by-step explanation:

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