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3 years ago

8x + 4 = 6x + 6 Help Help Help Help Help

Mathematics

2 answers:

satela [25.4K]3 years ago

6 0

Answer:

x = 1

Step-by-step explanation:

8x + 4 = 6x + 6 Subtract 4 from both sides

8x +4-4 = 6x +6-4 Combine

8x = 6x + 2 Subtract 6x from both sides

8x-6x = 6x-6x + 2 Combine

2x = 2 Divide by 2

2x/2 = 2/2

x = 1

Inessa [10]3 years ago

3 0

Answer:

12x

Step-by-step explanation:

6x +6+ 12x 8x +4 +12x

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The correct answer is

$t = \frac{0.49-0.29}{\sqrt{\frac{(0.42)^2}{100} +}\frac{(0.29)^2}{100} }$

Step-by-step explanation:

To solve the question we note that the question involves a test statistic calculation given by

$t = \frac{x_1-x_2}{\sqrt{\frac{s_1^2}{n_1} +}\frac{s_2^2}{n_2} }$ Where

x₁ = Mean of sample 1

x₂ = Mean of sample 2

n₁ = Sample size of sample 1

n₂ = Sample size of sample 2

s₁ = Variance of sample 1

s₂ = Variance of sample 2

s₁ = ∑(x₁ - x₁')²/n₁, s₂ = ∑(x₂ - x₂')²/n₂

The test statistic is a variable that is derived from a given data sample and is applied in hypothesis testing. The test statistic measures the available data against the expected value from the null hypothesis

With the given data, we have

$t = \frac{0.49-0.29}{\sqrt{\frac{(0.42)^2}{100} +}\frac{(0.29)^2}{100} }$

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