Answer:
7
Step-by-step explanation:
Listing the factors of each number is one way, that is
factors of 35 : 1, 5, 7, 35
factors of 42 : 1, 2, 3, 6, 7, 14, 21, 42
The common factors are 1 and 7
The GCF is therefore 7
Multiplication is a very old concept in math. So old that it dates back to ancient egypt, mesopotamia, etc. Each place probably came up with the concept on their own parallel to one another, or trade helped make the concept spread. It's very likely that the actual person who came up with the idea is unknown and won't be known since the concept is so ancient. It's like asking "who came up with the alphabet" which is an equally old concept.
Side note: multiplication is repeated addition. So if we added 3+3+3+3+3 to get 15, then we can say 3*5 = 12 as a shortcut. So its likely ancient peoples were adding the same number to itself over and over, leading them to develop a shortcut notation/method to get the answer quicker.
He used 1.25 of flour to make one batch of brownies
Answer:
Variable costing
Step-by-step explanation:
The term variable costing is a concept that is used in managerial accounting. Variable costing is a type of costing methodology that includes the variable manufacturing costs. When we say variable manufacturing costs, what we mean essentially is the cost of the inputs of production that are not fixed in price. For example, the machinery are assets and are primarily under the fixed cost. Things like labor cost may not be fixed and can even vary day to day. So therefore, we do not count things like that as variable.
Answer:
9 hours
Step-by-step explanation:
