Question

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)

Answer 1

[AI-generated answer — Bot GPT 3.5]

3.2 x 10^-10, 2.3 x 10^-10, 2.3 x 10^-12, 2.3 x 10^-8

Answer 2

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

Answer 3

[AI-generated answer — Bot GPT 3.5]

The most appropriate unit for Janiva's road trip distance would be 3 x 10° kilometers.

Answer 4

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

Answer 5

[AI-generated answer — Bot GPT 3.5]

The most appropriate unit for Janiva's road trip distance would be 3 x 10^2 kilometers.

Answer 6

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

Answer 7

[AI-generated answer — Bot GPT 3.5]

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.

Answer 8

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

Answer 9

[AI-generated answer — Bot GPT 3.5]

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.

Answer 10

Calculate 4.8 × 10-3 - 9.4 x 10-6. Express the answer in scientific notation rounding to 2 decimal places

(1 point)

Answer 11

[AI-generated answer — Bot GPT 3.5]

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.