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umka21 [38]
3 years ago
12

Help on my recent question plz?

Mathematics
2 answers:
morpeh [17]3 years ago
6 0
Attatch it or we cannot help
Mashutka [201]3 years ago
4 0

Answer:

Attach it plz or I can't help

Step-by-step explanation:

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Find the distance between each pair points (-5,3) , (-4,-5)?
tester [92]

The distance formula is d=√(x2-x1)² + (y2-y1)²

So... d =8.06226

Hope this helps

7 0
3 years ago
The two-way table shows the number of books of each type in Eliza's home ​what is the probability that a randomly selected refer
Salsk061 [2.6K]

Answer:

B. 0.4

Step-by-step explanation:

Use the definition of the probability

Pr=\dfrac{\text{Number of all favorable outcomes}}{\text{Number of all possible outcomes}}

You have to find the probability that a randomly selected reference book is hard cover. Hence, from the table

  • Number of all possible outcomes = Number of Reference books = 25
  • Number of all favorable outcomes = Number of Hardcover Reference books = 10

So, the probability is

Pr=\dfrac{10}{25}=\dfrac{40}{100}=0.4

6 0
3 years ago
Read 2 more answers
Which statements must be true regarding the diagram?<br> (please check more than one answer)
nikdorinn [45]
Try this option:
- true;
- not true;
- true;
- true;
- not true.
4 0
3 years ago
Read 2 more answers
Does anyone know the answers? I'm awful at evaluation. <br> |7-9|=<br> |7|-9=
ella [17]

Answer:

2; -2

Step-by-step explanation:

|7-9| = |-2| = 2

|7|-9= 7 - 9 = -2

3 0
3 years ago
What are the hypotheses for testing to see if a correlation is statistically significant?
Andrew [12]

Answer:

Step-by-step explanation:

For testing of significance of correlation coefficient denoted by r, we create hypotheses in three ways

They are one tailed, two tailed.  One tailed can be stated as right tailed and also left tailed.

The null hypothesis would normally be as r=0

Verbally we can say this there is no association between the dependent and independent variable (linear)

Against this alternate hypothesis is created as

either r not equal to 0

or r>0 or r<0

If r not equal to 0, we say two tailed hypothesis test

If r>0 is alternate hypothesis, it is right tailed test

If r<0 is alternate hypothesis, then it is left tailed test.

8 0
3 years ago
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