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Chapter 2: Problem 24

(a) 1222 pounds \(/ 2.0 \mathrm{in} .=?\) (b) 1222 pounds \(/ 2.00 \mathrm{in} .=?\) (c) What do you get when you quadruple \(21.72 \mathrm{~cm} ?\)

Short Answer

Expert verified
(a) \( 611\ \dfrac{\text{pounds}}{\text{in}} \) (b) \( 611.00\ \dfrac{\text{pounds}}{\text{in}} \) (c) \( 86.88\ \text{cm} \)

Step by step solution

01

(a)Dividing 1222 pounds by 2 inches

Divide 1222 pounds by 2 inches: \( \dfrac{1222\text{ pounds}}{2.0\text{ in}} \) Now, perform the division: \( \dfrac{1222}{2} = 611 \) The result is: \( 611\ \dfrac{\text{pounds}}{\text{in}} \)
02

(b)Dividing 1222 pounds by 2.00 inches

Divide 1222 pounds by 2.00 inches: \( \dfrac{1222\text{ pounds}}{2.00\text{ in}} \) Now, perform the division with consideration for decimal points: \( \dfrac{1222}{2.00} = 611.00 \) Keeping the appropriate significant figures, the result is: \( 611.00\ \dfrac{\text{pounds}}{\text{in}} \)
03

(c)Quadrupling 21.72 cm

Quadruple 21.72 cm by multiplying it by 4: \( 4\times21.72\text{ cm} \) Now, perform the multiplication: \( 4\times21.72 = 86.88 \) The result is: \( 86.88\ \text{cm} \)

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Most popular questions from this chapter

Using a ruler marked in centimeters and millimeters, a student measures the diameter of a ball to be \(1.5 \mathrm{~cm}\). His partner measures the same ball with the same ruler and comes up with \(1.50\) \(\mathrm{cm}\). Which student used the ruler incorrectly? How did that student use the ruler incorrectly?

Why can't you multiply just one side of an equation by something when algebraically rearranging the equation?

In the United States, car fuel efficiency is expressed in miles per gallon of gasoline. However, fuel efficiency can also be expressed in kilometers per liter of gasoline. If the fuel efficiency of a car is \(11.0 \mathrm{~km} / \mathrm{L}\), what is its fuel efficiency in miles per gallon? \([1\) mile \(=1.61 \mathrm{~km}, 1\) gallon \(=3.79 \mathrm{~L}]\)

A student measures the mass of an object three times and reports the numeric average of her measurements. If her three measurements are \(212 \mathrm{~g}\), \(260 \mathrm{~g}\), and \(233 \mathrm{~g}\) and the actual mass is \(235 \mathrm{~g}\), which of the following statements is true: (a) The student is accurate but not precise. (b) The student is precise but not accurate. (c) The student is both accurate and precise. (d) It is impossible to tell whether the student is accurate and \(/\) or precise without knowing how she determined the mass.

If 1 U.S. dollar is worth \(1.54\) Canadian dollars, how many U.S. dollars are needed to purchase an item that costs 350 Canadian dollars?
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