Asked by sal fisher

The diameter of Mars is about 6.8 X 103
kilometers. The diameter of Earth is about 1.2763 X 104
kilometers. About how much greater is Earth's diameter than the diameter of Mars? Please answer in scientific notation.
Responses
A 5.963 X 103
kilometers5.963 X 103 kilometers
B 5.963 X 107
kilometers5.963 X 107 kilometers
C 59.63 X 103
kilometers59.63 X 103 kilometers
D 5.963 X 104
kilometers5.963 X 104 kilometers
Answered by sal fisher
The diameter of Earth is 7.9175×103 miles.

How is 7.9175×103 written in standard notation?
Responses
A 0.00791750.0079175
B 79.17579.175
C 7,917.57,917.5
D 79,175
Answered by sal fisher
A factory builds a new warehouse that is approximately 1.28 X 105
square feet. Later, they add on 1.13 X 103
more square feet for offices. Use scientific notation to write the total size of the new building. Write the number in scientific notation.
Responses
A 1.2913 X 102
square feet1.2913 X 102 square feet
B 129,130 square feet129,130 square feet
C 129.13 X 102
square feet129.13 X 102 square feet
D 1.2913 X 105
square feet
Answered by sal fisher
Express the number in scientific notation.

63,600,000
Responses
A 6.36 x 10 76.36 x 10 7
B 6.36 x 10 -76.36 x 10 -7
C 63.6 x 106
63.6 x 10 6
D 636 x 10 5
Answered by sal fisher
Pluto is considered to be a dwarf planet in our Solar System. Pluto is about 3.6 X 109
miles from the Sun. Mercury is about 3.6 X 107
miles from the Sun. About how many times farther from the Sun is Pluto than Mercury?
Responses
A 1 X 1015
1 X 1015
B 1 X 10 0
1 X 10 0
C 1 X 10 2
1 X 10 2
D 1 X 10 −2
Answered by sal fisher
The width of a human hair is 0.003937 inches.

How is this number written in scientific notation?
Responses
A 3.937 x 10-43.937 x 10 -4
B 3.937 x 10-33.937 x 10 -3
C 3.937 x 10-63.937 x 10 -6
D 3.937 x 103
Answered by GPT 3.5
To find the difference between the diameters of Earth and Mars, we subtract the diameter of Mars from the diameter of Earth:

Diameter of Earth - Diameter of Mars = (1.2763 X 10^4) km - (6.8 X 10^3) km

= (1.2763 - 0.68) X 10^4 km

= 5.963 X 10^3 km

Therefore, Earth's diameter is about 5.963 X 10^3 km greater than Mars's diameter.

Answer: A) 5.963 X 10^3 km
Answered by GPT 3.5
To write 7.9175×10^3 in standard notation, we need to move the decimal point 3 places to the right.

Therefore, 7.9175×10^3 in standard notation is 7,917.5.

Answer: C) 7,917.5
Answered by GPT 3.5
To find the total size of the new building, we add the initial size of the warehouse to the additional square footage for offices:

1.28 X 10^5 square feet + 1.13 X 10^3 square feet

To add these two numbers in scientific notation, we must make sure the exponents are the same. We can do this by converting 1.13 X 10^3 to 11.3 X 10^2:

1.28 X 10^5 square feet + 11.3 X 10^2 square feet

Now we can add the numbers:

1.28 X 10^5 square feet + 11.3 X 10^2 square feet = 1.2913 X 10^5 square feet

Therefore, the total size of the new building is approximately 1.2913 X 10^5 square feet.

Answer: D) 1.2913 X 10^5 square feet
Answered by GPT 3.5
To express 63,600,000 in scientific notation, we need to move the decimal point to the right and count the number of places we moved it.

63,600,000 = 6.36 x 10^7

Answer: A) 6.36 x 10^7
Answered by GPT 3.5
To find the ratio of the distance of Pluto from the Sun to the distance of Mercury from the Sun, we divide the distance of Pluto by the distance of Mercury:

(3.6 X 10^9 miles) / (3.6 X 10^7 miles)

When dividing numbers in scientific notation, we subtract the exponents:

3.6 X 10^9 miles / 3.6 X 10^7 miles = 10^(9-7) = 10^2

Therefore, Pluto is about 1 X 10^2 times farther from the Sun than Mercury.

Answer: C) 1 X 10^2
Answered by GPT 3.5
To write 0.003937 inches in scientific notation, we need to move the decimal point 3 places to the right:

0.003937 inches = 3.937 x 10^(-3) inches

Therefore, the number is written in scientific notation as 3.937 x 10^(-3).

Answer: B) 3.937 x 10^(-3)