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2 years ago

How is solving equations different from solving inequalities?

Mathematics

1 answer:

Evgen [1.6K]2 years ago

7 0

Answer: Sometimes you may have to flip the sign on inequalities when your dividing or multiplying by a negative.

Step-by-step explanation:

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A 25 kg rock , is raised to the top of a hill 10 m high. What is the PE of the rock ?

nexus9112 [7]

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$Potential \: \: Energy =(mass) \times (gravity \: acceleration) \times (height) \\$

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If gravity acceleration is 10 :

$PE = 25 \times 10 \times 10$

$PE = 2500$

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If gravity acceleration is 9.8 :

$PE = 25 \times 9.8 \times 10$

$PE = 25 \times 98$

$PE = 2450$

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2 years ago

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MA_775_DIABLO [31]

Answer:

C) 21 girls : 9 boys

Step-by-step explanation:

You just have to compare the ratio you're given to the answers and see if the ratios from the answers match up to the ratio you were given. The reason C is the answer is because if you divide by 3 in the ration, it is the same as the ratio you were given, 7:3

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Answer:

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Step-by-step explanation:

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Step-by-step explanation:

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