Please answer the two questions in the picture. thanks

1. True or False True or false? T true, F false. The cout and cin identifiers are part of the standard namespace. Machine level code is easily readable by humans When you declare a variable in C++, you must specify it's data type. When you declare a variable as const, the variable's value can later be changed any time. A variable declared inside an if statement cannot be used outside that if statement In Mixed expressions, the value returned will have the same precision as the highest precision operand Given x = 2, y = 3, the expression (y 0) && (y-x) is true 2. Given variable x has been declared as an int, which of the following are legal C++ statements? (circle all that apply) a)x (2+4); b) (2+4) x; c) x = true; d) x = 2.75; = =