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Gre4nikov [31]
3 years ago
14

3√6×2√3=...5√12+3√3=...​

Mathematics
1 answer:
ikadub [295]3 years ago
6 0

Answer:

  • 3\sqrt{6}\times \:2\sqrt{3}=18\sqrt{2}
  • 5\sqrt{12}+3\sqrt{3}=13\sqrt{3}

Step-by-step explanation:

                                                        1)

Given the expression

3\sqrt{6}\:\times \:2\sqrt{3}

\mathrm{Factor\:integer\:}6=3\times \:2

=3\sqrt{3\times \:2}\times \:2\sqrt{3}

\mathrm{Apply\:radical\:rule}:\quad \sqrt[n]{ab}=\sqrt[n]{a}\sqrt[n]{b}

=3\sqrt{3}\sqrt{2}\times \:2\sqrt{3}

\mathrm{Apply\:radical\:rule}:\quad \sqrt{a}\sqrt{a}=a

=3\times \:2\times \:3\sqrt{2}

=18\sqrt{2}

Thus,

3\sqrt{6}\times \:2\sqrt{3}=18\sqrt{2}

                                                        2)

Given the expression

5\sqrt{12}+3\sqrt{3}

\:=\:5\sqrt{\left(4\right)\left(3\right)}+3\sqrt{3}

=\:5\times 2\sqrt{\left(3\right)}+3\sqrt{3}

=10\sqrt{3}+3\sqrt{3}

\mathrm{Add\:similar\:elements:}\:10\sqrt{3}+3\sqrt{3}=13\sqrt{3}

=13\sqrt{3}

Thus,

5\sqrt{12}+3\sqrt{3}=13\sqrt{3}

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A sample of 50 impossible whoppersandwiches have a mean fat content of 37.6g and standard deviation of 4.9g . A sample of 58 reg
cluponka [151]

Answer:

Step-by-step explanation:

H0: μ1____ μ2For Q17(circle one: equal to, <u>less than or equal to</u>, greater than or equal to, not equal to )

H1 : μ1____ μ2For Q18(circle one: equal to, less than, <u>greater than</u>, not equal to )

Formula for calculating the the test:

t = [ (x₁ - x₂) - d ] / sqrt[(s₁²/n₁) + (s₂²/n₂)]

where x₁ = 37.6, x₂ = 39.3, d = 0 assuming equality = 37.6 - 39.3 = -1.7

s₁² = 4.92 = 24.01, s₂² = 2.72 = 7.29, n₁ = 50, n₂ = 58.

thus, t = [ (-1.7) - (0)] / √(24.01/50) + (7.29/58)

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P value:

Lets find the degree of freedom:

DF = (s₁²/n₁ + s₂²/n₂)² / { [ (s₁² / n₁)² / (n₁ - 1) ] + [ (s₂² / n₂)² / (n₂ - 1) ] }

DF = (24.01/50 + 7.29/58)² / {[(24.01 / 50)² / 50-1)] + (7.29/58)² / 58-1)]}

DF = (0.4802 + 0.1257)² /{[ (0.4802)²/49] + (0.1257)²/57)]}

DF = (0.6059)²/ (0.00471 + 0.00028)

DF = 0.3671 / 0.00499 = 75.37

Thus, P value = 0.9968 using a t distribution calculator.

Decision/Conclusion: Since the P value 0.9968 is greater than α (.05), Fail to Reject H0, There is not sufficient evidence to warrant the rejection of the claim.

4 0
3 years ago
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svlad2 [7]
The answer is 3.46 meters

You can get the answer by using the pythagorean theorem, since the ladder and the wall form a right triangle.

c^2 = a^2 + b^2
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12 = b^2
b = sqrt(12) or 3.46 meters
7 0
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