Using powers of 10, which would be the best choice for the first number to subtract in the division problem 956 87? 870
87
8,700
800

Lance lived in portugal and brazil for a total of 14 months to learn portuguese. he learned an average of 130 new words per month when he lived in portugal, and an average of 150 new words per month when he lived in brazil. in total he learned 1920 new words. write a system of equations to represent the situation. use x to represent portugal, and y to represent brazil

Valentina is subtracting from . she finds the lcd to be 15y2. what is valentina's next step?

Which coefficient matrix represents a system of linear equations that has a unique solution ? options in photo*