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SpyIntel [72]
3 years ago
13

- 30 = 5 ( x + 11 ) x =

Mathematics
1 answer:
pishuonlain [190]3 years ago
4 0
X is -17
- 30 =5(x + 11) \\  - 30 = 5x + 55 \\ 5x =  - 30 - 55 =  - 85
x =  \frac{ - 85}{5}  =  - 17






good luck
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Susan can buy 6 flower seed packets for $2. If all the seed packets cost the same amount of money, how many packets can Susan bu
antiseptic1488 [7]

Answer:She can buy 30 packets

Step-by-step explanation:

6 flower seeds  $2

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8 0
3 years ago
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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.

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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}

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

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\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

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6 0
3 years ago
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user100 [1]

Answer:

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Consistent and independent system: If the given system has only one solutions, then it is an consistent and independent system.

Consistent and dependent system: If the given system has many solutions, then it is an consistent and dependent system.

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x+3y=18        .... (1)

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Answer:

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Step-by-step explanation:

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