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yarga [219]
2 years ago
10

Show if √5×√5×√8 is rational or irrational numbers​

Mathematics
2 answers:
kobusy [5.1K]2 years ago
8 0
√5 x√5 x√8= √(5x5x8) = √200 = 10 √2
It’s an irrational number
Mekhanik [1.2K]2 years ago
8 0

Answer:

Irrational number

Step-by-step explanation:

<h3>Rational and irrational number:</h3>

  Prime factorize the number and then simplify.

\sf \sqrt{5}*\sqrt{5}*\sqrt{8}=\sqrt{5*5*8}

                     \sf = \sqrt{5*5*2*2*2}\\\ = 5* 2* \sqrt{2}\\\\= 10\sqrt{2}is an irrational number.

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Can someone help solve for Y
kotykmax [81]
Because angleCBD+angleBDC+angleC=180 so angleCBD+angleBDC=180-angleC=180-82=98 because BC=DC so angleCBD=angleBDC so 2 angleCDB=98 so angleCDB=49 so y=29 by Joy Xu,紫馨雪汐
7 0
3 years ago
Find f^3(x) for f(x)=4/x^2
vaieri [72.5K]

Answer:

  f³(x) = 64/x⁶

Step-by-step explanation:

  f³(x) = (f(x))³ = (4/x²)³ = 4³/(x²)³

  f³(x) = 64/x⁶

_____

The applicable rules of exponents are ...

  (a/b)^c = (a^c)/(b^c)

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7 0
3 years ago
Simplify completely quantity x squared plus 4 x minus 45 all over x squared plus 10 x plus 9 and find the restrictions on the va
dem82 [27]
(x² + 4x - 45)/(x² + 10x + 9) 
<span>
Numerator = N = x² + 4x - 45 </span>
= x² + 9x - 5x - 45 
= (x² + 9x) - (5x + 45) 
= x(x + 9) - 5(x + 9) 
= (x + 9)(x - 5) 
<span>
Denominator = D = x² + 10x + 9 </span>
= x² + x + 9x + 9 
= (x² + x) + (9x + 9) 
= x(x + 1) + 9(x + 1) 
= (x + 1)(x + 9) 
<span>
Hence, the given expr. = N/D </span>
= {(x + 9)(x - 5)}/{(x + 1)(x + 9) 
= (x - 5)/(x + 1) 
<span>
Restrictions : x ≠ - 1, x = 5 </span>


I hope my answer has come to your help. Thank you for posting your question here in Brainly.
7 0
3 years ago
Read 2 more answers
9 What dimensions do we need a rectangular
wlad13 [49]

Answer:

W=30m L=90m

Step-by-step explanation:

A =2,700 m²

L=W+60

we know that area of a rectangle is A=L*W so we sustitute what we know

A=L*W

2,700 = (W+60)*W distribute

2,700 = W² +60W subtract 2,700 from both sides

W²+60W-2,700 =0

solve the quadratic equation with quadratic formula or on the calculator on the graph and will get W= -90 and W=30. Reject the -90 value because we can not have negative measurements. Our solution is W=30

L=A/W=2,700/30=90

3 0
3 years ago
Please solve I will mark brainliest if correct
VladimirAG [237]

Answer:

m<RQP = 62°

Step-by-step explanation:

m<RQP = m<PQB + m<RQB

m<RQP = 38° + 24°

m<RQP = 62°

6 0
3 years ago
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