la gran pirámide de Egipto construida hace aproximadamente 4500 años y mide 146 m de altura si se midiera en decámetros cuál sería esta medida​

Given this information, which expression must represent the value of b?

For the following geometric sequence, find the recursive formula. {-80, 20, -5, } i need : ')

How many different three-digit numbers can be formed using the digits 1 comma 2 comma 9 comma 6 comma 4 comma 3 comma and 8 without repetition? for example, 664 is not allowed.