All categories

3 years ago

Perpendicular lines are lines that ___ ?

Mathematics

2 answers:

schepotkina [342]3 years ago

7 0

Answer:

cross and meet at a 90 degree angle.

Step-by-step explanation:

konstantin123 [22]3 years ago

3 0

Answer:

Perpendicular lines are lines that intersect at a right (90 degrees) angle.

Step-by-step explanation:

You might be interested in

2n+(7n+8)= what is the missing coefficient

Taya2010 [7]

Assuming that you were to simplify this, you'd get 2n + 7n + 8 = 9n + 8.

6 0

3 years ago

A group of friends go to the movies. The function h(x) represents the amount of money spent where x is the number of friends at

viktelen [127]

Answer:

not really

Step-by-step explanation:

The number of friends (x) is expected to be an integer. 6.5 friends does not really make sense.

_____

There are all kinds of ways this might make sense, but none of them are supported by the information given in the problem statement.

8 0

3 years ago

Read 2 more answers

Darren wants to estimate the mean age in a population of trees. He'll sample nnn trees and build a 90\%90%90, percent confidence

Alchen [17]

Using the z-distribution, as we have the standard deviation for the population, it is found that the smallest sample size required to obtain the desired margin of error is of 77.

<h3>What is a z-distribution confidence interval?</h3>

The confidence interval is:

$\overline{x} \pm z\frac{\sigma}{\sqrt{n}}$

In which:

$\overline{x}$ is the sample mean.

z is the critical value.

n is the sample size.

$\sigma$ is the standard deviation for the population.

The margin of error is given by:

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

In this problem, we have that the parameters are given as follows:

$M = 3, z = 1.645, \sigma = 16$ .

Hence, solving for n, we find the sample size.

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

$3 = 1.645\frac{16}{\sqrt{n}}$

$3\sqrt{n} = 1.645 \times 16$

$\sqrt{n} = \frac{1.645 \times 16}{3}$

$(\sqrt{n})^2 = \left(\frac{1.645 \times 16}{3}\right)^2$

$n = 76.97$

Rounding up, the smallest sample size required to obtain the desired margin of error is of 77.

More can be learned about the z-distribution at brainly.com/question/25890103

4 0

2 years ago

Which table represents a linear function?

Phoenix [80]

For it to be a linear equation, the same difference in x must produce the same difference in y always.

Choice A.
difference in x: 2 - 1 = 1
difference in y: -6 - (-2) = -4

difference in x: 3 - 2 = 1
difference in y: -2 - (-6) = 4

A difference of 1 in x gave a difference of -4 in y and another difference of 1 in x gave a difference of 4 in y.
This is not linear.

Choice B.
difference in x: 2 - 1 = 1
difference in y: -5 - (-2) = -3

difference in x: 3 - 2 = 1
difference in y: -9 - (-5) = -4

A difference of 1 in x gave a difference of -3 in y and another difference of 1 in x gave a difference of -4 in y.
This is not linear.

Choice C.
difference in x: 2 - 1 = 1
difference in y: -10 - (-2) = -8

difference in x: 3 - 2 = 1
difference in y: -18 - (-10) = -8

Do the other differences. All differences in y are -8 corresponding to a difference in x of -1.

This is linear.

Choice D.
The differences in y vary. It is not linear.

Answer: Choice C is linear.

3 0

3 years ago

Read 2 more answers

[(2 times 10) divided by 1/3] + 8 =

kondaur [170]

14.6666666667

Step-by-step explanation:

2•10=20/1/3=6.66666666667+8 is that but you can write it like 14.6 with _ that on top

3 0

3 years ago