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2 years ago

!!20 points!! I need help! I forgot how to solve a two step problem and I need a answer -6h -6=30

Mathematics

2 answers:

Rudiy272 years ago

6 0

Answer:

h = -6

Step-by-step explanation:

BlackZzzverrR [31]2 years ago

3 0

Answer:

h = -6

Step-by-step explanation:

-6h -6=30

+6 +6

-6h = 36

-6h/-6 = 36/-6

h = -6

Brainliest plz

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2 years ago

Use properties to compare expression 5 x ( 6 x 3 )and ( 5 x 6) x 3

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2 years ago

Write the quadratic function in vertex form, then identify the vertex

34kurt

Answer:

vertex = (- 10, - 10 )

Step-by-step explanation:

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y = a(x - h)² + k

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2 years ago

The amount of lateral expansion (mils) was determined for a sample of n = 8 pulsed-power gas metal arc welds used in LNG ship co

Alona [7]

Answer:

95% Confidence interval for the variance:

$3.6511\leq \sigma^2\leq 34.5972$

95% Confidence interval for the standard deviation:

$1.9108\leq \sigma \leq 5.8819$

Step-by-step explanation:

We have to calculate a 95% confidence interval for the standard deviation σ and the variance σ².

The sample, of size n=8, has a standard deviation of s=2.89 miles.

Then, the variance of the sample is

$s^2=2.89^2=8.3521$

The confidence interval for the variance is:

$\dfrac{ (n - 1) s^2}{ \chi_{\alpha/2}^2} \leq \sigma^2 \leq \dfrac{ (n - 1) s^2}{\chi_{1-\alpha/2}^2}$

The critical values for the Chi-square distribution for a 95% confidence (α=0.05) interval are:

$\chi_{0.025}=1.6899\\\\\chi_{0.975}=16.0128$

Then, the confidence interval can be calculated as:

$\dfrac{ (8 - 1) 8.3521}{ 16.0128} \leq \sigma^2 \leq \dfrac{ (8 - 1) 8.3521}{1.6899}\\\\\\3.6511\leq \sigma^2\leq 34.5972$

If we calculate the square root for each bound we will have the confidence interval for the standard deviation:

$\sqrt{3.6511}\leq \sigma\leq \sqrt{34.5972}\\\\\\1.9108\leq \sigma \leq 5.8819$

6 0

2 years ago

!!20 points!! I need help! I forgot how to solve a two step problem and I need a answer -6h -6=30​

!!20 points!! I need help! I forgot how to solve a two step problem and I need a answer -6h -6=30