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SCORPION-xisa [38]
2 years ago
13

Which of the following is irrational?

Mathematics
2 answers:
garri49 [273]2 years ago
8 0

\sqrt{2}

A square root of any number that won't result in a whole number is irrational.

In this case, \sqrt{2} is irrational.

dedylja [7]2 years ago
6 0

Answer:

\sqrt{2}

Step-by-step explanation:

the other 3 are perfect squares and have rational answers.

\sqrt{1.44} =1.2\\\sqrt{1}= 1\\\sqrt{4} =2

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A car travels 61 miles per hour. At this rate, how far will the car travel in 5 hours?​
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305 miles per hour

Step-by-step explanation:

61 miles per hour

61(5)= 305 miles/ hour

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A classroom is 32 1/2 feet long, 30 feet wide, and 7 1/2 feet high what is the volume
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6000

Step-by-step explanation:

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3 years ago
A triangle has vertices A(0, 0), B, (–3, 6), and C(0, 9). What are the coordinates of the triangle after a dilation with a scale
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A(0,0) B(-9,18) C(0,27)
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3 years ago
Joe can cut and split a cord of firewood in 3 fewer hours than Dwight can. When they work​ together, it takes them 2 hours. How
aalyn [17]

Answer:

Dwight will take 6 hours to finish the job alone and Joe will take 3 hours to finish the job alone.

Step-by-step explanation:

Let us assume the time taken by Dwight to split a cord of firewood  = K hrs

So, the per hour rate of Dwight  = (\frac{1}{K})

As, Joe uses 3 LESS hours then Dwight.

So, the time taken by Joe to split a cord of firewood  = (K- 3) hrs

So, the per hour rate of Joe  = (\frac{1}{K-3})

Now, when both of them wok together, it takes them 2 hours.

So, the per hour rate of BOTH of them  = (\frac{1}{2})

⇒ Per hour rate of ( Dwight  + Joe)  =(\frac{1}{2} )

\implies (\frac{1}{K}) +  (\frac{1}{K-3}) = (\frac{1}{2})

Now, solving for the value of K , we get:

(\frac{1}{K}) +  (\frac{1}{K-3}) = (\frac{1}{2})\\\implies  \frac{(K-3) + K}{K (K-3)}  = (\frac{1}{2})\\\implies 2(2K -3) = K^2 - 3K\\\implies k^2 - 3K -4K +6 = 0\\\implies K^2 - 7K  + 6=  0\\\implies K^2 - 6K - K  + 6=  0\\\implies K(K-6) -1(K - 6)=  0\\\implies (K-6)(K-1) = 0

Implies either K = 6 Or K = 1

But if K = 1, (K-3)  = 1- 3  = -2 hours would be A CONTRADICTION.

⇒ K  = 6 hours

Hence, Dwight will take 6 hours to finish the job alone and Joe will take (k-3) = (6-3) = 3 hours to finish the job alone.

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3 years ago
a copy machine can print 810 copies every 9 minutes. A laser printer printed 1,350 copies. How long did it take to print?
Gre4nikov [31]

Answer:

15

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2 years ago
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