The sum of sally’s age plus thomas’s age is 12. the difference of sally’s age and thomas’s age is 3. writeand solve a system f equations to find their ages. interpret the solution.

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

Asquare picture with sides of 32 inches is to be mounted on a square mat with sides of 52 inches. find the area of the mat that will remain uncovered by the picture.

What are the exclude value of mn+3m