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tino4ka555 [31]
3 years ago
9

Which equation represents the line that is perpendicular to y= 1/6 and passes through (-8,-2)?

Mathematics
2 answers:
snow_lady [41]3 years ago
6 0
Answer: y=-6
Explanation:
kolbaska11 [484]3 years ago
5 0

Answer:

x= -8

Step-by-step explanation:

Just did it and got it right

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The surface area of two hemispheres are in the ratio 64: 121. Find the ratio of<br> their radii
Blababa [14]

Answer:

5:7

Step-by-step explanation:

Let the radius of first hemisphere be 'r' units

Let the radius of second hemisphere be 'R' units

2 x \piπ x r^2 / 2 x \piπ x R^2 = 25 / 49

r^2 / R^2 = 25 / 49

r / R = 5 / 7

the ratio of radii is 5:7.

8 0
3 years ago
Read 2 more answers
The number of hours that a nine month old baby sleeps at night are normally distributed with a population standard deviation of
finlep [7]

Answer:

The margin of error for a confidence interval for the population mean with a 90% confidence level is 0.53 hours.

Step-by-step explanation:

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.

So it 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.

In this quesstion:

\sigma = 1.5, n = 22

So

M = 1.645*\frac{1.5}{\sqrt{22}} = 0.53

The margin of error for a confidence interval for the population mean with a 90% confidence level is 0.53 hours.

4 0
3 years ago
Help pls ;) 9 points :0
zavuch27 [327]
I believe it’s b- it might not be correct I believe
6 0
3 years ago
Jamar figured that they will spend $39 for popcorn. Each movie cost $19. Write and solve an equation to find how many movies the
Elan Coil [88]
How much money do you have at the moment
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4 years ago
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Two linear equations are shown in the graph.
In-s [12.5K]

Answer:

I am taking this graph because this question looked similar to this one.

Step-by-step explanation:

Answer should be B.

The intersection point is (3,3)

8 0
3 years ago
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