18 9,2 3,3,2 30 15,2 5,3,2 42 21,2 7,3,2
6
highest common factor is 6
To find the Least Common Multiple (LCM) of 18, 30, and 42, we first need to find the prime factorization of each number. 18 = 2 * 3^2 30 = 2 * 3 * 5 42 = 2 * 3 * 7 Then, we take the highest power of each prime factor that appears in any of the numbers. 2^1 * 3^2 * 5^1 * 7^1 = 2 * 3^2 * 5 * 7 = 630 Therefore, the LCM of 18, 30, and 42 is 630.
To calculate the percent decrease from 60 to 42, you first need to find the difference between the two numbers, which is 60 - 42 = 18. Then, divide the difference by the original number (60) to get the decimal decrease: 18 / 60 = 0.3. Finally, convert the decimal to a percentage by multiplying by 100: 0.3 * 100 = 30%. Therefore, the percent decrease from 60 to 42 is 30%.
Thirty 42 - 18 = 24 24 / 2 = 12 18 + 12 = 30 42 - 12 = 30
The number midway between two numbers is the average of those two numbers. In this case, the average of 42 and 18 is (42 + 18) / 2 = 60 / 2 = 30. Therefore, the number midway between 42 and 18 is 30.
The common factors of 30 and 42 are 1, 2, 3, and 6.
Thirty 42 - 18 = 24 24 / 2 = 12 18 + 12 = 30 42 - 12 = 30
18 9,2 3,3,2 30 15,2 5,3,2 42 21,2 7,3,2
42
42
42
The greatest common factor of 18, 30, and 42 is 2.
6
6
The common factors of 18, 30, and 42 are: 1, 2, 3, and 6The Greatest Common Factor (GCF) is: 6