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3 years ago

NEED ANSWERS!!!!!!!!!!

Mathematics

2 answers:

klio [65]3 years ago

7 0

(Placeholder because it won’t let me ask anymore questions before I answer some)

ch4aika [34]3 years ago

6 0

Answer:

(1,0) and (3,0)

Step-by-step explanation:

The roots are always shown where the parabola crosses the x-axis.

In this particular graph, the parabola crosses at (1, 0) and (3, 0). Which means the roots are:

x = 1 and x = 3

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A school for learning foreign languages has 72 students who learn German, and 54 of those students also learn Russian. There are

marusya05 [52]

Answer:

We are given a information that:

A school for learning foreign languages has 72 students who learn German, and 54 of those students also learn Russian. There are 12 students who do not learn German but learn Russian, and 10 students do not learn either German or Russian.

Based on this information we can make our table as:

Learn German don't learn German Total

LR 54 12 66

DNLR 18 10 28

Total 72 22 94

DNLR represent do not learn Russian and LR represent learn Russian.

Now for finding the conditional relative frequency table we divide each of the quantities by the total sum of each row i.e. first row is obtained by dividing by 66, second by dividing by 28 and third by dividing by 94 to obtain the table as:

Learn German don't learn German Total

LR 0.82 0.18 1

DNLR 0.64 0.36 1

Total 0.77 0.23 1

5 0

3 years ago

What is the slope of the line shown below?

Genrish500 [490]

The right answer is -3.

Look at the attached picture ⤴

Hope it will help u..:)

8 0

3 years ago

Va rog mult sa ma ajutati ,imi trebuie neaparat . plz

Natasha_Volkova [10]

Answer:

amenda. de ce ai nevoie?

Step-by-step explanation:

5 0

3 years ago

A 52-in TV measures 52 inches along its diagonal (corner to corner measure). If that TV is 33.6 inches high, how wide is it?

Zinaida [17]

Step-by-step explanation:

Use Pythagoras' theorem

${a}^{2} = b {}^{2} + c {}^{2}$

52² = 33.6² + x²

solve for x

3 0

3 years ago

Read 2 more answers

When testing a new treatment, what is the difference between statistical significance and practical significance? Can a treatm

Arada [10]

Answer:

Statistical significance relates to whether an effect exists.

Practical significance refers to the magnitude of the effect.

And you can have statistical significance but not practical.

Step-by-step explanation:

Let's analize it with an example.

Suppose that your new treatment involves hair recovery.

You divide the population of the test in two different groups.

And you apply the treatment to only one of them.

You can see that the treatment works and there is a 3% improvment.

You have statistical significance. The treatment worked.

Now, if the test was expensive, the 3% improvement might not be practical.

3 0

3 years ago