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Paha777 [63]
3 years ago
9

Evaluate 7a-5b when a=4 and b=3

Mathematics
2 answers:
melomori [17]3 years ago
6 0

Hello!

Let's plug in our numbers and solve below.

7(4)-5(3)

28-15=13

Therefore, our answer is 13.

I hope this helps!

AysviL [449]3 years ago
5 0
Hey ,here is the answer to ur question......!
7a-5b
=>7*4-5*3
=>28-15
=>13
Hope this helps u .......!!!!!
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Operations with Radical Expressions
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<u>Step-by-step explanation:</u>

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= 3\sqrt{5*5*2*2*11}

= 3*5*2\sqrt{11}

= 30\sqrt{11}

******************************************

Answer: 6\sqrt{30}

<u>Step-by-step explanation:</u>

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= \sqrt{2*2*5} * \sqrt{3} * \sqrt{3*3*2}

= \sqrt{2*2*5*3*3*3*2}

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= 6\sqrt{30}

********************************************

Answer: -\sqrt{5}

<u>Step-by-step explanation:</u>

  4\sqrt{20} - 3\sqrt{45}

= 4\sqrt{2*2*5} - 3\sqrt{3*3*5}

= 4*2\sqrt{5} - 3*3\sqrt{5}

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= -\sqrt{5}

********************************************

Answer: 4\sqrt{5}

<u>Step-by-step explanation:</u>

  2\sqrt{5} + 3\sqrt{5} - \sqrt{5}

= (2+3-1)\sqrt{5}

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********************************************

Answer: 46\sqrt{2}

<u>Step-by-step explanation:</u>

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= 4\sqrt{2*2*2*2*2} + 6\sqrt{2*5*5}

= 4*2*2\sqrt{2} + 6*5\sqrt{2}

= 16\sqrt{2} + 30\sqrt{2}

= 46\sqrt{2}





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chubhunter [2.5K]

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