3 years ago

Find the value of the expression when x=1 and y=4. 7x+4+5=

Mathematics

1 answer:

Agata [3.3K]3 years ago

6 0

Answer: umm wheres y at? after the Equal sign?

Step-by-step explanation:

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A polynomial function with a leading coefficient of 1 and multiplicity 1 for each root has these zeros:

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Answer:

$x - 2 \sqrt{11}$

$x + 2 \sqrt{11}$

$x - 4$

Step-by-step explanation:

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3 years ago

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Alecsey [184]

Answer:

Analyze then add

Step-by-step explanation:

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4 years ago

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velikii [3]

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3 years ago

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insens350 [35]

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3 years ago

Suppose the speeds of vehicles traveling on a highway are normally distributed and have a known population standard deviation of

erik [133]

Answer:

2.88

Step-by-step explanation:

Data provided in the question

$\sigma$ = Population standard deviation = 7 miles per hour

Random sample = n = 32 vehicles

Sample mean = $\bar X$ = 64 miles per hour

98% confidence level

Now based on the above information, the alpha is

= 1 - confidence level

= 1 - 0.98

= 0.02

For $\alpha_1_2$ = 0.01

$Z \alpha_1_2$ = 2.326

Now the margin of error is

$= Z \alpha_1_2 \times \frac{\sigma}{\sqrt{n}}$

$= 2.326 \times \frac{7}{\sqrt{32}}$

= 2.88

hence, the margin of error is 2.88

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3 years ago