Which expression is equivalent to the expression below?
7x+5y+x+x+x+x

Jonathan can type 20 documents in 40 minutes ,and susan can type it in 30 minutes and jack can type it in 24 minutes working together ,how much time will it is take them type the same document

Analyze the diagram below and complete the instructions that follow. how to find tan

Arace is 10 kilometers long.markers will be placed at the beginning and end of the race course and at each 500 meter mark.how many markers are needed to mark the course for the race?