Place the numbers in descending order.
2.3 × 10-10: 3.2 x 10-10.2.3 x 10-12.2.3 x 10-8
(2 points)
11 answers
3.2 x 10^-10, 2.3 x 10^-10, 2.3 x 10^-12, 2.3 x 10^-8
Janiva is taking a road trip. The distance she plans to travel can be written as 3 × 10ª kilometers,
3 × 105 meters, 3 × 107 centimeters, or 3 × 10% millimeters. Which distance uses the most appropriate units?
(1 point)
O 3 x 105 meters
O 3x 108 millimeters
O 3x 10" centimeters
O 3 x 10° kilometers
3 × 105 meters, 3 × 107 centimeters, or 3 × 10% millimeters. Which distance uses the most appropriate units?
(1 point)
O 3 x 105 meters
O 3x 108 millimeters
O 3x 10" centimeters
O 3 x 10° kilometers
The most appropriate unit for Janiva's road trip distance would be 3 x 10° kilometers.
Janiva is taking a road trip. The distance she plans to travel can be written as 3 × 10---> 2 kilometers,
3 × 10---> 5 meters, 3 × 10---> 7 centimeters, or 3 × 10---> 8 millimeters. Which distance uses the most appropriate units?
(1 point)
O 3 x 10--> 5 meters
O 3x 10--> 8 millimeters
O 3x 10--> 7 centimeters
O 3 x 10--> 2 kilometers
3 × 10---> 5 meters, 3 × 10---> 7 centimeters, or 3 × 10---> 8 millimeters. Which distance uses the most appropriate units?
(1 point)
O 3 x 10--> 5 meters
O 3x 10--> 8 millimeters
O 3x 10--> 7 centimeters
O 3 x 10--> 2 kilometers
The most appropriate unit for Janiva's road trip distance would be 3 x 10^2 kilometers.
A national park covers an area of 1.42 x 106 acres. A nearby national forest covers an area of 1.2 × 106 acres.
What is the total number of acres in the park and the forest combined? (1 point)
O 2.62 x 106
O 2.62 x 1012
O 1.54 x 106
O 15.5 x 106
What is the total number of acres in the park and the forest combined? (1 point)
O 2.62 x 106
O 2.62 x 1012
O 1.54 x 106
O 15.5 x 106
To find the total number of acres in the park and the forest combined, we need to add the areas of the park and the forest.
1.42 x 10^6 acres (park) + 1.2 x 10^6 acres (forest)
Calculating this sum gives us:
2.62 x 10^6 acres
Therefore, the total number of acres in the park and the forest combined is 2.62 x 10^6 acres. The correct option is O 2.62 x 10^6.
1.42 x 10^6 acres (park) + 1.2 x 10^6 acres (forest)
Calculating this sum gives us:
2.62 x 10^6 acres
Therefore, the total number of acres in the park and the forest combined is 2.62 x 10^6 acres. The correct option is O 2.62 x 10^6.
The distance from Venus to the sun is about 67,000,000 miles. The distance from Earth to the sun is about
2.6 × 107 farther. What is the distance from Earth to the sun (a)? Write your answer in scientific notation to
decimal place. (1 point)
a x 107
2.6 × 107 farther. What is the distance from Earth to the sun (a)? Write your answer in scientific notation to
decimal place. (1 point)
a x 107
To find the distance from Earth to the sun, we need to add the distance from Venus to the sun (67,000,000 miles) to the distance Earth is farther (2.6 x 10^7 miles).
67,000,000 miles + 2.6 x 10^7 miles
Adding these values gives us:
69.6 x 10^7 miles
To write this in scientific notation, we can rewrite it as:
6.96 x 10^8 miles
Therefore, the distance from Earth to the sun is 6.96 x 10^8 miles.
67,000,000 miles + 2.6 x 10^7 miles
Adding these values gives us:
69.6 x 10^7 miles
To write this in scientific notation, we can rewrite it as:
6.96 x 10^8 miles
Therefore, the distance from Earth to the sun is 6.96 x 10^8 miles.
Calculate 4.8 × 10-3 - 9.4 x 10-6. Express the answer in scientific notation rounding to 2 decimal places
(1 point)
(1 point)
To subtract 9.4 x 10^-6 from 4.8 x 10^-3, we can perform the subtraction directly:
4.8 x 10^-3 - 9.4 x 10^-6
= 4.8 x 10^-3 - 0.0094 x 10^-3 (writing both numbers in the same power of 10)
= (4.8 - 0.0094) x 10^-3
= 4.7906 x 10^-3
To express this answer in scientific notation rounding to 2 decimal places, we round 4.7906 to 4.79:
4.79 x 10^-3
Therefore, the answer is 4.79 x 10^-3.
4.8 x 10^-3 - 9.4 x 10^-6
= 4.8 x 10^-3 - 0.0094 x 10^-3 (writing both numbers in the same power of 10)
= (4.8 - 0.0094) x 10^-3
= 4.7906 x 10^-3
To express this answer in scientific notation rounding to 2 decimal places, we round 4.7906 to 4.79:
4.79 x 10^-3
Therefore, the answer is 4.79 x 10^-3.