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k0ka [10]
3 years ago
12

Please help!! I really need it Will mark brainliest

Mathematics
1 answer:
Fittoniya [83]3 years ago
7 0

Answer:

The last one and the second one

Step-by-step explanation:

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Is 5/18 a rational number ?
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5/18 is a rational number because a rational number is any integer,fraction terminating decimal,or repeating decimal.

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How many times longer is 1 cm than 0.00004 cm
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Step-by-step explanation:

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Allen subtracts (11x + y) from (ax + 6y). His correct answer is − 10x + 5y. What is the value of a?
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3 years ago
I need help if right I will give you brainiest ​
HACTEHA [7]

Answer:

5\sqrt{5}i or D

Step-by-step explanation:

\sqrt{-125} \\\\\mathrm{Apply\:radical\:rule}:\quad \sqrt{-a}=\sqrt{-1}\sqrt{a}\\\\\sqrt{-125}=\sqrt{-1}\sqrt{125}\\\\=\sqrt{-1}\sqrt{125}\\\\\mathrm{Apply\:imaginary\:number\:rule}:\quad \sqrt{-1}=i\\\\=\sqrt{125}i\\\\=5\sqrt{5}i

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3 years ago
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