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serg [7]
3 years ago
10

Which pair of lines are perpendicular lines?

Mathematics
1 answer:
liubo4ka [24]3 years ago
8 0
B is the answer I gotchu.
explanation: m1=-4 m2=4 so yes that’s perpendicular.
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I need the answer to this question
bija089 [108]
If you divide the original equation by "a", you have your answer.
  30/a = (a*60)/a = 60*(a/a)
  30/a = 60
7 0
3 years ago
The product of 34 and the number of pounds
polet [3.4K]

Answer:

ur mom gay

Step-by-step explanation:

8 0
3 years ago
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Suppose the parent population has an exponential distribution with a mean of 15 and standard deviation of 12. Use the Central Li
bazaltina [42]

Answer:

The sampling distribution of the sample mean of size 30 will be approximately normal with mean 15 and standard deviation 2.19.

Step-by-step explanation:

The Central Limit Theorem estabilishes that, for a normally distributed random variable X, with mean \mu and standard deviation \sigma, the sampling distribution of the sample means with size n can be approximated to a normal distribution with mean \mu and standard deviation s = \frac{\sigma}{\sqrt{n}}.

For a skewed variable, the Central Limit Theorem can also be applied, as long as n is at least 30.

For the population, we have that:

Mean = 15

Standard deviaiton = 12

Sample of 30

By the Central Limit Theorem

Mean 15

Standard deviation s = \frac{12}{\sqrt{30}} = 2.19

Approximately normal

The sampling distribution of the sample mean of size 30 will be approximately normal with mean 15 and standard deviation 2.19.

4 0
3 years ago
99.999 rounded to the nearest tenth would be?
ale4655 [162]

Answer:

Look at the place after the tenths, it is more than 5.

99.999

So add +1 to the tenths place.

Rounded to the nearest tenth would be:

<h2>100.0</h2>
4 0
3 years ago
Read 2 more answers
Which figure will tessellate the plane? A. regular pentagon B. regular decagon C. regular octagon D. regular hexagon
Harrizon [31]
<h3>Answer: D. regular hexagon</h3>

A hexagon is composed of 6 congruent equilateral triangles. Each equilateral triangle has interior angle of 60 degrees. Adding 6 such angles together gets you to 360 degrees. So we've done one full rotation and covered every bit of the plane surrounding a given point. Extend this out and you'll be able to cover the plane. A similar situation happens with rectangles as well (think of a grid, or think of tiles on the wall or floor)

In contrast, a regular pentagon has interior angle 108 degrees. This is not a factor of 360, so there is no way to place regular pentagons to have them line up and not be a gap or overlap. This is why regular pentagons do not tessellate the plane. The same can be aside about decagons and octagons as well.

5 0
3 years ago
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