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Gre4nikov [31]
3 years ago
6

A student would like to estimate the mean length of words in a book report he just finished writing. He selects a

Mathematics
1 answer:
liubo4ka [24]3 years ago
3 0

Answer:

the answer is a. The population is all words in the book report and the sample is the random sample of 20 words.

Step-by-step explanation:

got it right on edge

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Question please help me
anygoal [31]

9514 1404 393

Answer:

   3x -y -30 = 0

Step-by-step explanation:

The reference line for the intercept can be written in standard form as ...

  2x +5y = 20

Setting y=0 and solving for x, we find the x-intercept to be ...

  2x = 20

  x = 20/2 = 10

__

The line perpendicular to the first reference line can use the same x- and y-coordinates, but swapped, with one of them negated. If the line is right-shifted from the origin to the x-intercept point, its equation will be ...

  3(x -10) -y = 0

In general form, this is ...

   3x -y -30 = 0

_____

<em>Additional comments</em>

Perpendicular lines have slopes that are opposite reciprocals of each other. The slope of a line in general form is ...

  m = -(coefficient of x)/(coefficient of y)

The opposite reciprocal of this can be had by swapping the coefficients and negating one of them.

In general form, we like to have the first coefficient positive, so we choose to negate the (new) y-coefficient in this problem.

The general form equation ax+by=0 would define a line through the origin. Using the usual methods for translating functions, we can make the line go through point (h, k) by writing the equation as a(x-h)+b(y-k) = 0. This is the method we used to make the line have the desired x-intercept.

7 0
3 years ago
. A fair number cube labeled 1, 2, 3, 4, 5, and 6 is rolled 100 times. About how many times would you expect the number 3 to app
Stella [2.4K]

I hope I answer your question

3 0
3 years ago
12 out of 20 students prefer having a study hall. What percentage of students prefer study hall?
Masja [62]
12 out of 20
Your answer is the question
3 0
2 years ago
Read 2 more answers
Vertical angles are congruent. Two nonadjacent angles formed by two intersecting lines are vertical angles.
Gnesinka [82]

Answer:

A

Step-by-step explanation:

If two nonadjacent angles formed by two intersecting lines = Vertical angles= congruent

Then

Two non adjacent angles formed by two intersecting lines are congruent

4 0
3 years ago
Read 2 more answers
I REALLY NEED HELP PLEASE!!
nadezda [96]

Answer:

To me the triangles in #6 appear to be the same shape as the first triangle in #7(EFG) with different lengths on the sides. But not much else is the same. I mean they are all triangles but the shape of the second triangle in #7(XYZ) isn't the same as either of the triangles in #6.

I hope that made sense to you!

Hope this helped! Have a great day! :)

4 0
3 years ago
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