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3 years ago

If two lines intersect, then the intersection is exactly two points. True or false

Mathematics

2 answers:

strojnjashka [21]3 years ago

3 0

Answer:

false

Step-by-step explanation:

it is only 1 point because it intersects once

Rashid [163]3 years ago

3 0

Answer:

False

Step-by-step explanation:

The intersection would be where the two lines intersected, it would be only one point, not two (wherever point they intersected is at)

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Calculating the degrees of freedom, the sample variance, and the estimated standard error for evaluations using the t statistic

Yuliya22 [10]

Answer:

a) For the first part we have a sample of n =10 and we want to find the degrees of freedom, and we can use the following formula:

$df = n-1= 10-1=9$

d.9

b) $s^2 = \frac{SS}{n-1}= \frac{600}{41-1}= 15$

a.15

c) For this case we have the sample size n = 25 and the sample variance is $s^2 =400$ , the standard error can founded with this formula:

$SE = \frac{s^2}{\sqrt{n}}= \frac{400}{\sqrt{25}}= 80$

Step-by-step explanation:

Part a

For the first part we have a sample of n =10 and we want to find the degrees of freedom, and we can use the following formula:

$df = n-1= 10-1=9$

d.9

Part b

From a sample we know that n=41 and SS= 600, where SS represent the sum of quares given by:

$SS = \sum_{i=1}^n (X_i -\bar X)^2$

And the sample variance for this case can be calculated from this formula:

$s^2 = \frac{SS}{n-1}= \frac{600}{41-1}= 15$

a.15

Part c

For this case we have the sample size n = 25 and the sample variance is $s^2 =400$ , the standard error can founded with this formula:

$SE = \frac{s^2}{\sqrt{n}}= \frac{400}{\sqrt{25}}= 80$

8 0

3 years ago

Adding and Subtracting Fractions Solve each problem. Write your answer as a mixed number(if possible) 1. 2 1/9 - 7/6= 2. 2/3 + 2

AleksandrR [38]

1) 1 1/6
2) 1 1/6
4) 5 1/ 18

hope you got your answer i didn't know what number 3 was so i did the rest

5 0

3 years ago

Give the answer to the question below.

alexira [117]

Answer:

1/4 assuming x is not 0

Step-by-step explanation:

x^0 is 1 and 1/4 * 1 = 1/4

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4 years ago

An amateur basketball game was scheduled to last 60 minutes including time between quarters several 99 second timeout used throu

777dan777 [17]

Answer:

alesiabrack089 you are completely and utterly the bestest.

Step-by-step explanation:

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3 years ago

Solve for the variable. 3/4x = -24

sleet_krkn [62]

Hello!

Answer:

$\huge\boxed{x = -32}$

3/4x = -24

To isolate the "x" variable, divide both sides by 3/4 (multiply by its reciprocal, or 4/3)

3/4x · 4/3 = -24 · 4/3

x = (-24 · 4) / 3

x = -32.

8 0

4 years ago

Read 2 more answers