3 years ago

A student wants to use the property

1 answer:

6 0

Answer:

hyoyr nhggggfryuvsrthjugdhba jgrybcwqetjkoplhsaxvnnutfvhyu

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Oliga [24]

On the bottom left, the answer is subtraction property of equality because you need to subtract 4x to the 7x to simplify the equation.

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3 years ago

AleksAgata [21]

Answer:

657483920

Step-by-step explanation:

this is incorrect

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3 years ago

natka813 [3]

Answer: C. 12.5

Step-by-step explanation:

Given : A manufacturer of new light bulbs claims the average lifetime of its long-life bulb is more than 4000 hours.

Population mean : $\mu=4000$

Sample size : n= 100

Sample mean : $\overline[x}=4500$

Standard deviation: $s=400$

The value of test-statistic is given by :-

$z=\dfrac{\overline{x}-\mu}{\dfrac{s}{\sqrt{n}}}\\\\\Rightarrow\ z=\dfrac{4500-4000}{\dfrac{400}{\sqrt{100}}}\\\\\Rightarrow\ z= 12.5$

Hence, the value of the test statistic for this problem is 12.5.

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3 years ago

Ymorist [56]

The slope of the line is 3

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3 years ago

Leno4ka [110]

That would be 42(x) greater than 809(x)

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3 years ago