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zmey [24]
3 years ago
10

Please help me on one math question thanks !

Mathematics
2 answers:
lina2011 [118]3 years ago
7 0

Answer:

b

Step-by-step explanation:

(-12+-2)/2 ,(6+-5)/2

just olya [345]3 years ago
4 0

Answer:

  A.  (-22, 17)

Step-by-step explanation:

M is the midpoint, so is calculated as ...

  M = (L +N)/2

Solving for L, we find ...

  2M = L +N

  L = 2M -N

  L = 2(-12, 6) -(-2, -5) = (2(-12)-(-2), 2(6)-(-5)) = (-24+2, 12 +5)

  L = (-22, 17)

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Someone help pls! Step by step pls
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That’s how you plug it in and get the answer because when you plug in z and y value correctly you just have to follow the rule and simplify
So final answer would be +2

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3 years ago
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Please help me I am stressed it is ratio tables
Oduvanchick [21]

Answer:

1.

1/2/3/4/5/32

3/6/9/12/15/96

2.

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Step-by-step explanation:

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2 years ago
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3 0
3 years ago
A family is relocating from St. Louis, Missouri, to California. Due to an increasing inventory of houses in St. Louis, it is tak
Dafna1 [17]

Answer:

a. Assume that the population has a normal distribution.

b. The 90% confidence interval of the mean sale time for all homes in the neighborhood is between 219.31 days and 240.69 days.

Step-by-step explanation:

Question a:

We have to assume normality.

Question b:

We have that to find our \alpha level, that is the subtraction of 1 by the confidence interval divided by 2. So:

\alpha = \frac{1 - 0.9}{2} = 0.05

Now, we have to find z in the Ztable as such z has a pvalue of 1 - \alpha.

That is z with a pvalue of 1 - 0.05 = 0.95, so Z = 1.645.

Now, find the margin of error M as such

M = z\frac{\sigma}{\sqrt{n}}

In which \sigma is the standard deviation of the population and n is the size of the sample.

M = 1.645\frac{35}{\sqrt{29}} = 10.69

The lower end of the interval is the sample mean subtracted by M. So it is 230 - 10.69 = 219.31 days.

The upper end of the interval is the sample mean added to M. So it is 230 + 10.69 = 240.69 days.

The 90% confidence interval of the mean sale time for all homes in the neighborhood is between 219.31 days and 240.69 days.

7 0
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