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2 years ago

Can you guys please answer this thank you

Mathematics

1 answer:

11111nata11111 [884]2 years ago

3 0

Answer:F B G E A

Step-by-step explanation:

1. F( a rigid transformation only changes the position but the size and angles remain the same)

2. B(The angle of rotation symmetry is the smallest angle the figure can be rotated to coincide with itself.)

3. G(Congruent means that it is the same size and shape)

4. E(Translation moves the whole shape including the points so that the shape and sizes remain the same)

5. A(Though it's position may change, reflective symmetry ensures that no other parts of the shape can change no matter what.)

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Help me fast 50 points!!!!!!!!

mihalych1998 [28]

Answer:

Step-by-step explanation:

There are 14 data points on the plot

The median is the middle value, which is between the 7th and 8th data points

Since it is even, we find the average of the 7th and 8th data points

Add the 7th and 8Th data points values and divide by 2

( 30+30)/2 = 60/2 = 30

The median is 30

7 0

3 years ago

Read 2 more answers

How to express each of the following pairs of

vichka [17]

Answer:

a) 3<x<8

b) -4<x<-2

c) -6<x<5

d) -21/4 < x-8/3

e) 0<x<7

Step-by-step explanation:

Given the following inequalities

a) x > 3, 2x - 3 < 15

Solve 2x - 3 < 15

2x < 15+3

2x<18

x<18/2

x<8

Combine x>3 and x<8

If x>3, then 3<x

On combining, we have:

3<x<8

b) For the inequalities 25 > 1 - 6x, 1 > 3x + 7

25 > 1 - 6x

25-1>-6x

24>-6x

Divide through by -6:

24/-6 > -6x/-6

-4 <x

For the inequality 1 > 3x + 7

1-7>3x

-6>3x

-6/3 > 3x/3

-2 > x

x < -2

Combining both results i.e -4 <x and x < -2, we will have:

-4<x<-2

c) For the inequalities 2x - 7<3< 27 + 4x

On splitting:

2x - 7<3 and 3< 27 + 4x

2x < 3+7

2x<10

x<5

Also for 3< 27 + 4x

3-27<4x

-24<4x

-24/4 < 4x/4

-6<x

Combining both solutions i.e x<5 and -6<x will give;

-6<x<5

d) For the inequalities 3x + 8 <0 < 21 + 4x

3x + 8 <0

3x < -8

x < -8/3

Also for 0 < 21 + 4x

0-21<4x

-21<4x

-21/4 < 4x/4

-21/4 < x

Combining -21/4 < x and x < -8/3 will give;

-21/4 < x-8/3

e) For the inequalities 5x - 36 < -1 < 2x – 1

Split:

5x - 36 < -1

5x < -1+36

5x<35

5x/5 < 35/5

x < 7

For the expression -1 < 2x – 1

-1+1 < 2x

0 < 2x

0<x

Combining both inequalities 0<x and x < 7 will give:

0<x<7

7 0

3 years ago

I don't understand linear functions, thanks!

ANEK [815]

Answer:

I think the answer is Y=-1 and x=1

5 0

3 years ago

Is this the correct answer?

Shtirlitz [24]

Answer:

yes

Step-by-step explanation:

5 0

3 years ago

A study on students drinking habits wants to determine the true average number of alcoholic drinks all FSU undergraduate student

dybincka [34]

Answer:

The sample size should be n=416 students.

Step-by-step explanation:

Hello!

The researchers wish to know which sample size should he take to estimate the true average number of alcoholic drinks all FSU undergraduate students who are members of a fraternity or sorority have in one week period.

The study variable is then

X: Number of drinks per week an undergraduate sorority/fraternity member has.

Preliminary studies show that the standard deviation is σ= 2.6 drinks per week.

Using a 1 - α: 0.95 of probability you have to find the sample size to estimate the population mean for a confidence interval with a margin error of no more than d= 0.25

Assuming that the variable has a normal distribution, the best statistic to use for the confidence interval is the standard normal, then the formula for the interval is:

X[bar] ± $Z_{1-\alpha /2}$ * $\frac{Sigma}{\sqrt{n} }$

Where the margin of error is:

d= $Z_{1-\alpha /2}$ * $\frac{Sigma}{\sqrt{n} }$

Using the given indormation you have to clear the sample size:

$\frac{d}{ Z_{1-\alpha /2}}$ = $\frac{Sigma}{\sqrt{n} }$

$(\sqrt{n} )*(\frac{d}{ Z_{1-\alpha /2}})$ = Sigma

$\sqrt{n}$ = $\frac{Z_{1-\alpha /2}*Sigma}{d}$

n= $(\frac{Z_{1-\alpha /2}*Sigma}{d})^2$

n= $(\frac{1.965*2.6}{0.25})^2$ = 415.50

Now since you cannot take a sample of 415.50 students, you have to round it to the next integer, so the sample size the researcher should take is 416 students.

I hope it helps!

5 0

3 years ago