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lbvjy [14]
4 years ago
5

Which one is a irrational number and why ?

Mathematics
2 answers:
labwork [276]4 years ago
6 0

Answer:

A. √40

Step-by-step explanation:

√49 = 7

√100 = 10

√9 = 3

but,

√40 = 6.32455532, so this is immperfect square

Gnom [1K]4 years ago
4 0

Answer: Option A, the square root of 40, is an irrational number.

Step-by-step explanation:

We are given 4 options:

- the sqrt of 40

- the sqrt of 49

- the sqrt of 100

- the sqrt of 9

All but one are perfect squares. Let's find out which one is not a perfect square.

The sqrt of 49 is 7. 7 times 7 is equal to 49.

The sqrt of 100 is 10. 10 times itself is equal to 100.

The sqrt of 9 is 3. 3 times 3 is equal to 9.

What about the square root of 40?

We know it's not a perfect square, and it's somewhere between 6 and 7. So, the hint from the question tells us that imperfect squares are irrational. Then this must be the answer!

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frez [133]
Simplifying
a + 4b = 5b + -3a

Reorder the terms:
a + 4b = -3a + 5b

Solving
a + 4b = -3a + 5b

Solving for variable 'a'.

Move all terms containing a to the left, all other terms to the right.

Add '3a' to each side of the equation.
a + 3a + 4b = -3a + 3a + 5b

Combine like terms: a + 3a = 4a
4a + 4b = -3a + 3a + 5b

Combine like terms: -3a + 3a = 0
4a + 4b = 0 + 5b
4a + 4b = 5b

Add '-4b' to each side of the equation.
4a + 4b + -4b = 5b + -4b

Combine like terms: 4b + -4b = 0
4a + 0 = 5b + -4b
4a = 5b + -4b

Combine like terms: 5b + -4b = 1b
4a = 1b

Divide each side by '4'.
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Simplifying
a = 0.25b
6 0
3 years ago
HELP PLZZ! DUE IN 15 MIN!! plz explain your answer to
Ugo [173]
<h3><u>Answer:</u></h3>
  • The chance of getting a 5 or 6 in the next turn is about 40%.
<h3><u>Step-by-step explanation:</u></h3>
  • => (5 + 3) ÷ (3 + 3 + 0 + 6 + 3 + 5)
  • => 8 ÷ 20
  • => 8/20
  • => 4/10
  • => 0.40
  • => 0.40 x 100
  • => 40%
<h3><u>Conclusion:</u></h3>

Therefore, the chance of getting a 5 or 6 in the next turn is about 40%.

Hoped this helped

BrainiacUser1357

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do you need more than that?

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