A rock has a mass of 45 g and a volume of 15 cm3. What is its density?
3 g/cm3
How many significant figures are present in 22.05?
4
How many minutes are in 3.2 days?
4608 minutes
You estimate that 110 customers will attend a special event but 125 actually attend. What is the percent error in your estimate?
12%
What is the independent variable in this graph?
A marble's volume is 6.5 mL, and the density of the type of glass used to make the marble is 2.5 g/mL. What is the mass of the marble?
16.25 g
Convert the following into scientific notation: 0.0302
3.02 x 10-2
What is 8024 inches converted to meters?
12 in = 1 ft
5280 ft = 1 mi
3.28 ft = 1 meter
203.9 meters
A student estimates the length of a rope to be 20 feet. After measuring it with a tape measure, the student finds the actual length is 25 feet. What is the percent error of the student's estimate?
20%
What is the dependent variable in this graph?
Number of Bicycles Sold
If a substance has a mass of 50 grams and a density of 2 g/mL, what would its volume be?
25 mL
Round 37432 to 3 SF
37400
Convert 22 m/s to mi/hr.
12 in = 1 ft
5280 ft = 1 mi
3.28 ft = 1 meter
49.2 mi/hr
A baker needs to measure out 500 grams of flour for a recipe. His scale is slightly off and he measures out 525 grams instead. What is the percent error of his measurement?
5%
In which month(s) was the number of bicycles sold 30?
February and April
An object has a density of 8 g/mL and displaces 64 mL of water when placed in a tub. What is its mass?
512 g
Calculate and correctly round 2.22 x 10.06
22.3
A chemist measures the density of an unknown liquid to be 1.52 g/mL. Convert this density to kilograms per m3.
1 kg = 1000 g
1 mL = 1 cm3
1,000,000 cm3 = 1 m3
1520 kg/m3
During a lab experiment, a student measures the mass of a substance to be 2.68 g/cm3. The actual value is 2.70 g/cm3. What is the percent error in the student’s measurement?
0.74%
What happened to the number of bicycles sold during March to May?
Decreases
A student measures a rectangular metal bar on a scale, finding its mass to be 45.9 g. Using a ruler, they measure the bar's dimensions, recording a length of 9.4 cm, a width of 3.7 cm, and a height of 2.4 cm. What is the density of the metal bar?
0.55 g/cm3
Calculate and correctly round 10.22 - 6.53
3.69
A new coffee shop opens in a busy urban area. On an average day, the shop attracts 215 customers. How many customers can the coffee shop expect to serve in one year?
78,475 people/yr
A gardener estimates a plant's height to be 30 centimeters. The plant's actual height is 40 centimeters. What is the percent error of the gardener's estimate?
25%
Could we realistically predict what might happen to bicycle sales in October? Why?
Answers may vary.