Evaluate - x - 4 when x = - 7 and y=5

Mathematics

1 answer:

shusha [124]2 years ago

7 0

Answer:

khan academy

Step-by-step explanation:

https://www.khanacademy.org/math/in-in-grade-9-ncert/xfd53e0255cd302f8:in-in-chapter-4-linear-equations-in-two-variables/xfd53e0255cd302f8:in-in-graph-of-a-linear-equation-in-two-variables/v/graphs-of-linear-equations

hope this helps

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Natalka [10]

In cases like these, you simply have to multiply the choices you have for each step.

In fact, you can choose between 4 different crusts. For each of these crusts you can choose 4 different sauces. This means that there are $4\cdot 4 = 16$ choices at this point. In fact, if we call the crust options 1,2,3,4 and the sauce options A,B,C,D, the 16 possible combinations are