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!!
1. 1.8 x 1010
2. 2.5 x 10-5
3. 9.1136 x 108
4. 6.2 x 101
1. (6.0 x 105) x (3.0 x 104) = 1.8 x 1010
2. (5 x 10–2) ÷ (2 x 103) = 2.5 x 10-5
3. (2.56 x 106) x (3.56 x 102) = 9.1136 x 108
4. The average number of people per square kilometer is 6.2 x 101.
Sure! Here are the answers to the questions:
1. (6.0 x 105) x (3.0 x 104) = 1.8 x 1010
To get this answer, you need to multiply the numbers in scientific notation. In this case, you multiply the two coefficients (6.0 x 3.0) and add the exponents (5 + 4). This gives you 18.0 x 109, which can be expressed as 1.8 x 1010 in scientific notation.
2. (5 x 10–2) ÷ (2 x 103) = 2.5 x 10-5
To get this answer, you need to divide the numbers in scientific notation. In this case, you divide the coefficients (5 ÷ 2) and subtract the exponents (-2 - 3). This gives you 2.5 x 10-5.
3. (2.56 x 106) x (3.56 x 102) = 9.1136 x 108
To get this answer, you need to multiply the numbers in scientific notation. In this case, you multiply the coefficients (2.56 x 3.56) and add the exponents (6 + 2). This gives you 9.1136 x 108.
4. Population per square kilometer = (2.52 x 107) ÷ (4.05 x 105) = 6.2 x 101
To get this answer, you need to divide the numbers in scientific notation. In this case, you divide the coefficients (2.52 ÷ 4.05) and subtract the exponents (7 - 5). This gives you 6.2 x 101.