What are the values of num1 and num2 after this snippet executes: double num1 = 4.20; double num2 = num1 * 10 + 5.0;?

In the code snippet provided, the first line initializes num1 with the value of 4.20. The second line calculates num2 by multiplying num1 by 10 and then adding 5.0 to that product.

Breaking down the calculation:

1. Multiply num1 by 10: [ 4.20 \times 10 = 42.0 ]

2. Add 5.0: [ 42.0 + 5.0 = 47.0 ]

Thus, after executing the code, num1 retains the value of 4.20, while num2 becomes 47.0 as a result of the calculation. This confirms that the values of num1 and num2 are 4.20 and 47.0, respectively.