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3 years ago

14

Mia purchased a book for $22.30 that were regularly priced at $30.00,not including tax. What percent of the cost did Mia save by

purchasing the book on sale?

1 answer:

slega [8]3 years ago

4 0

Mia would have purchase 12.30 because 22.30 minus 30.00 equals 12.50

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Exercice 2: Un remorqueur tire un bateau à la vitesse de 10 noeuds. La tension du câble est de 2500N, Le câble est parallèle à l

Elza [17]

Répondre:

1 285 watts

Explication étape par étape:

La puissance est exprimée selon la formule;

power = travail effectué / temps

Puissance = Force * (distance / temps)

Depuis Vitesse = distance / temps

Puissance = Force * vitesse

Donné

Force = 2500N

Vitesse (en m / s) = 0,514 m / s

Obligatoire

Puissance

Remplacez la formule donnée;

Puissance = 2500 * 0,514

Puissance = 1,285Watts

Par conséquent, la puissance correspondante requise est de 1285 watts

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3 years ago

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Sergio [31]

Answer:

<em>length</em><em> </em><em>l</em><em> </em><em>=</em><em>150</em><em> </em>

<em>breadth</em><em> </em><em>b</em><em> </em><em>=</em><em> </em><em>80</em><em> </em>

<em>lf</em><em> </em><em>2</em><em> </em><em>m</em><em> </em><em>wide</em><em> </em><em> </em><em>of</em><em> </em><em>road</em><em> </em><em>is</em><em> </em><em>inside</em><em> </em><em>the</em><em> </em><em>garden</em>

<em>then</em>

<em>lt's</em><em> </em><em>area</em><em> </em><em>=</em><em> </em><em>l</em><em> </em><em>×</em><em>b</em>

<em> </em><em> </em><em> </em><em> </em><em> </em><em> </em><em> </em><em> </em><em> </em><em> </em><em> </em><em> </em><em> </em><em> </em><em>=</em><em> </em><em>150</em><em> </em><em>×</em><em> </em><em>2</em>

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3 years ago

What is a calculadora and espirito in english????????

ElenaW [278]

Answer:

calculator and spirit are the correct answers

Step-by-step explanation:

(a brainliest would be much appreciated)

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2 years ago

Read 2 more answers

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

lara31 [8.8K]

Answer:

The sample size is 1875.

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 $1 - \frac{\alpha}{2}$ .

The margin of error is:

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

Sampling error of 0.03.

This means that $M = 0.03$

99.74% confidence level

So $\alpha = 0.0026$ , z is the value of Z that has a pvalue of $1 - \frac{0.0026}{2} = 0.9987$ , so $Z = 3$ .

25% of all adults had used the Internet for such a purpose

This means that $\pi = 0.25$

What is the sample size

The sample size is n. So

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

$0.03 = 3\sqrt{\frac{0.25*0.75}{n}}$

$0.03\sqrt{n} = 3\sqrt{0.25*0.75}$

Simplifying by 0.03 both sides

$\sqrt{n} = 100\sqrt{0.25*0.75}$

$(\sqrt{n})^2 = (100\sqrt{0.25*0.75})^2$

$n = 1875$

The sample size is 1875.

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3 years ago

What is the y-intercept of the line given by the equation below? ( Y=4x-6 )

kaheart [24]

D. (-6,0) because according to y=mx+c, c is the y intercept and in this case when x=0, y=-6 using the given equation

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4 years ago