Question

499×10^7
397.3×10^−1
0.000236
49
.55×10^9
Match the following expressions with their correct Scientific Notation.(5 points)
4.9×10
5.5×10^8
3.97×10^−3
4.99×10^5
4.9×10^2
5.5×10^10
3.97×10^2
3.97×10
4.99×10^9
2.36×10^4
5.5×10^9
The number is in Scientific notation already
2.36×10^−3
2.36×10^−4
4.99×10
4.9×10^−1

Answer 1

bot what's number 4 again

Answer 2

The diameter of the planet Mercury is 4.87 x 10^3 kilometers.
The diameter of the planet Venus is 1.21 x 10^4 kilometers.
The diameter of Earth is 1.28 x 10^4 kilometers.
The diameter of Mars is 6.79 x 10^3 kilometers.
Order the planets from smallest to largest diameter. (4 points)

Answer 3

Simplify this expression and put your answer in Scientific Notation: (5×10^6)×(2×10^−2) (4 points)
Step 1: the coefficients
Add
Subtract
Multiply
Divide
Step 2: the exponents to simplify.
Add
Subtract
Multiply
Divide
Step 3: to change the exponent for Scientific Notation
Add to the exponent
Subtract from the exponent
Do not change the exponent
Step 4: is the final answer.
2.5 x 10^4
7.0 x 10^4
1 x 10^5
10 x 10^4
1 x 10^3

Answer 4

Simplify this expression and put your final answer in Scientific Notation: 2.7×10^5/3.2×10^7 (4 points)
Step 1: the coefficients.
Add
Subtract
Multiply
Divide
Step 2: to simplify the exponents.
Add
Subtract
Multiply
Divide
Step 3: to change into Scientific Notation.
Add to the exponent
Subtract from the exponent
Do not change the exponent
Step 4: is the simplified answer.
0.844 x 10^2
0.844 x 10^-2
8.44 x 10^-3
8.44 x 10^12
8.44 x 10^-1

Answer 5

Step 2: to simplify the exponents.
Add
Subtract
Multiply
Divide
what's step 2

Answer 6

499×10^7 - 4.99×10^9
397.3×10^-1 - 3.97×10^2
0.000236 - 2.36×10^-4
49 - 4.9×10^1
55×10^9 - 5.5×10^10

Answer 7

The expression 4.9×10^2 matches with the number 49.

Answer 8

Ordering the planets from smallest to largest diameter:

Mercury: 4.87 x 10^3 km
Mars: 6.79 x 10^3 km
Earth: 1.28 x 10^4 km
Venus: 1.21 x 10^4 km

The correct order is:
1. Mercury
2. Mars
3. Venus
4. Earth

Answer 9

Given expression: (5×10^6)×(2×10^−2)

Step 1: Multiply the coefficients: 5 * 2 = 10
Step 2: Add the exponents since it's multiplication: 6 + (-2) = 4
Step 3: The exponent remains the same after simplifying.
Step 4: The final answer is 10 x 10^4, which simplifies to 1 x 10^5.

Therefore, the final answer in Scientific Notation is 1 x 10^5.

Answer 10

Given expression: 2.7×10^5 / 3.2×10^7

Step 1: Divide the coefficients: 2.7 / 3.2 ≈ 0.844 (approximately)
Step 2: Subtract the exponents since it's division: 5 - 7 = -2
Step 3: The final answer is 0.844 x 10^-2 in Scientific Notation.

Therefore, the simplified answer in Scientific Notation is 0.844 x 10^-2.

Answer 11

Apologies for the oversight. Step 2 for exponent simplification when dividing would involve subtraction for exponents. Thank you for the correction.