adelina04f adelina04f 21-11-2017 Mathematics contestada A computer can perform 4.5×〖10〗^2 instructions in a second. Which expression shows how long it would take to perform 1.8×〖10〗^10 instructions? 4×〖10〗^5 seconds 4×〖10〗^7 seconds 4×〖10〗^8 seconds 8.1×〖10〗^12 seconds