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sleet_krkn [62]
2 years ago
10

Express the trinomial (2x+4)(x-1)

Mathematics
2 answers:
Oduvanchick [21]2 years ago
7 0

The answer would be 2x^2+2x-4

diamong [38]2 years ago
4 0

Answer:

(2x + 4)(x - 1) \\  = 2 {x}^{2}  - 2x + 4x - 4 \\ 2 {x}^{2}  + 2x - 4 \\ thank \: you

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Find the measure of Angle 1.
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Read 2 more answers
State the hypothesis and claim:
vekshin1

Answer:

<em>Null Hypothesis</em>: H₀ : μ < 214 miles

<em>Alternative Hypothesis :H₁</em>: μ> 214 miles

The calculated value |t| = 1.319 < 3.4966 at 0.01 level of significance

Null hypothesis is accepted

The average daily travel distance is less than 214 miles

Step-by-step explanation:

<u><em>Step(i):-</em></u>

Given that the size of the sample 'n' = 12

The mean of the Population = 214 miles

The mean of the sample   = 198 miles

The standard deviation of the sample = 42 miles

Level of significance = 0.01

<u><em>Step(ii):-</em></u>

Null Hypothesis: H₀ : μ < 214 miles

Alternative Hypothesis :H₁: μ> 214 miles

Test statistic

             t = \frac{x^{-} -mean}{\frac{S.D}{\sqrt{n} } }

             t = \frac{198 -214}{\frac{42}{\sqrt{12} } }

          |t| = |- 1.319| = 1.319

Degrees of freedom   = n-1 = 12 -1 =11

critical value  t_{(0.005 , 11)} =   3.4966

The calculated value |t| = 1.319 < 3.4966 at 0.01 level of significance

Null hypothesis is accepted

The average daily travel distance is less than 214 miles

3 0
3 years ago
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