Work out the lowest common multiple of 42 and 63

Solve and explain your "main thinking" 9+7

Multiplication question

Luna Ray has five orange picks and no green picks. You add some green picks so one in every three picks is orange. How many picks are there now?

If the cost, C, for manufacturing x units of a certain product is given by C=x^2-20x+30, find the number units manufactured at a cost of $10,955

You have a cylinder and you want to double its volume. Should you double it's radius or its height, or could you do either? why or why not?

A sandwich costs $0.75 more than a container of milk. A customer buys 4 sandwiches and 4 containers of milk. The customer pays $7.00. What is the cost of a sandwich?

two trains are 550 miles apart heading toward each other on parallel tracks. Train A is traveling east at 35 miles per hour, while train B travels west at 45 miles per hour. When will the trains meet each other in their respective tracks?

How do you expand (x-4) ^2?

19. How many 2-inch segments are there in 12 ft.? A. 24 B. 72 C. 10 D. 6

What is the perimeter of the rectangle shown below? apex algebra 1 sem 1 unit 6