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3 years ago

For all real numbers a and b, 2a • b = a2 + b2. True or False ? Explain.

Mathematics

2 answers:

vekshin13 years ago

8 0

False. You can pick any two numbers, but not the same number, to show its false. try it

kvv77 [185]3 years ago

5 0

First step of the equation is to simplify the equation 2a • b = a2 + b2 into 2 ab = a2 + b2. This cannot be factored anymore although. when we try to substitute a with 5 and b with 2, the answer in the right hand side of the equation is -9. hence the answer to this problem is false. we can try another values to verify

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Answer:

Step-by-step explanation:

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sveta [45]

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3 years ago

Alonso goes on a kayaking trip that costs $50. At the end, he wants to tip the guide 15%. How much will the tip be?

xeze [42]

Answer:

I believe that the tip would be $7.50

Step-by-step explanation:

Well I'm assuming that they want us to find 15% of 50. And 15% of 50 is 7.5

Meaning that the answer is A

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3 years ago

Read 2 more answers