1.Please express your answer in scientific notation.
(6.0 x 105) x (3.0 x 104) = (1 point)
18 x 1020
18 x 109
1.8 x 1020
1.8 x 1010
2. Please express your answer in scientific notation.
(5 x 10–2) ÷ (2 x 103) = (1 point)
2.5 x 10-5
2.5 x 10-1
25 x 101
25 x 102
3. Please express your answer in scientific notation.
(2.56 x 106) x (3.56 x 102) = (1 point)
9.1136 x 1012
91.136 x 108
9.1136 x 108
91.136 x 1012
4. In a recent year, the population of California was about 2.52 x 107 people. Its land area is about 4.05 x 105 km2. What was the average number of people per square kilometer? (1 point)
0.62 x 105
6.2 x 101
0.62 x 1014
6.2 x 109
Please give me the answers!!
yes please I need help on this one 2 someone please give us the answers
im doing a test and im stuck, help
1. (6.0 x 10^5) x (3.0 x 10^4) = 1.8 x 10^10
2. (5 x 10^-2) ÷ (2 x 10^3) = 2.5 x 10^-5
3. (2.56 x 10^6) x (3.56 x 10^2) = 9.1136 x 10^8
4. Average number of people per square kilometer = (2.52 x 10^7) / (4.05 x 10^5) = 62 x 10^3 = 6.2 x 10^4
1. To multiply numbers in scientific notation, you need to multiply the coefficients and add the exponents.
(6.0 x 10^5) x (3.0 x 10^4) = 18.0 x 10^(5+4) = 18.0 x 10^9
The answer is 18 x 10^9.
2. To divide numbers in scientific notation, divide the coefficients and subtract the exponents.
(5 x 10^-2) ÷ (2 x 10^3) = (5 ÷ 2) x 10^(-2-3) = 2.5 x 10^-5
The answer is 2.5 x 10^-5.
3. Similar to the first question, you need to multiply the coefficients and add the exponents.
(2.56 x 10^6) x (3.56 x 10^2) = 9.1136 x 10^(6+2) = 9.1136 x 10^8
The answer is 9.1136 x 10^8.
4. To find the average number of people per square kilometer, divide the population by the land area.
(2.52 x 10^7) ÷ (4.05 x 10^5) = (2.52 ÷ 4.05) x 10^(7-5) = 0.62 x 10^2
The answer is 0.62 x 10^2.