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murzikaleks [220]
3 years ago
11

How do I do standard form with variables and things??

Mathematics
1 answer:
natka813 [3]3 years ago
3 0
I don't know how to explain but i can show you and example
so when you get a problem like this:
12x + 13x
At first you ignore the variables and add like normal:
12+13= 25
then you and the variable at the end of your sum
Answer: 25x

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A 6 cm long spring extends to 9 cm when a 1 kg load is suspended from it. What would be its length if a 2 kg load were suspended
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Step-by-step explanation:

To calculate the length of a spring with a 2 kg load, compare the displacement of a 1 kg load and adjust accordingly.

When a 1 kg load is suspended from the spring, the spring which is 6 cm stretches to 9 cm. This is 3 cm longer due to the weight. If you attach a weight which is twice as much then the displacement will be twice as much. Instead of stretching an additional 3 cm, it will stretch 2*3 = 6 cm. Add this to the length of the spring and it stretches in total 6 + 6 = 12 cm.

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