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2 years ago

Help (the answer isn't the 2nd one my friend did this test and chose that and got it wrong please )

Mathematics

2 answers:

Artyom0805 [142]2 years ago

7 0

Answer: 4 and 3/5

Step-by-step explanation:

dalvyx [7]2 years ago

3 0

Answer:

Really? The second one seems correct!

Step-by-step explanation:

Maybe they just switch the answers postions each time?

Example: You're friend picked the second one, but maybe that choice is not the second one that is showing on yours.

I might be wrong because I don't know how this works, but hope this helps and don't forget to follow!

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Omg please help for brainlist !!!!!!!!!!!!!!!!!!!

zhannawk [14.2K]

Answer:

f(x) is linear

g(x) is exponential

Step-by-step explanation:

A linear function will always have the same rate of change between equally distant points, while an exponential function will have an increasingly large rate of change between equally distant points.

First, look at f(x). All these points are equally distant at 2 units apart on the x-axis, so they can be directly compared:

$(-38)-(-18)=-20\\(-58)-(-38)=-20\\(-78)-(-58)=-20$

All of these points are the same distance apart on the y, so f(x) must be a linear function.

Now look at g(x). These are also all equally distant at only 1 unit apart.

$30-10=20\\90-30=60\\270-90=180$

These are very clearly not the same distance apart on the y, so g(x) must be the exponential function.

6 0

2 years ago

student randomly receive 1 of 4 versions(A, B, C, D) of a math test. What is the probability that at least 3 of the 5 student te

alexdok [17]

Answer:

1.2%

Step-by-step explanation:

We are given that the students receive different versions of the math namely A, B, C and D.

So, the probability that a student receives version A = $\frac{1}{4}$ .

Thus, the probability that the student does not receive version A = $1-\frac{1}{4}$ = $\frac{3}{4}$ .

So, the possibilities that at-least 3 out of 5 students receive version A are,

1) 3 receives version A and 2 does not receive version A

2) 4 receives version A and 1 does not receive version A

3) All 5 students receive version A

Then the probability that at-least 3 out of 5 students receive version A is given by,

$\frac{1}{4}\times \frac{1}{4}\times \frac{1}{4}\times \frac{3}{4}\times \frac{3}{4}$ + $\frac{1}{4}\times \frac{1}{4}\times \frac{1}{4}\times \frac{1}{4}\times \frac{3}{4}$ + $\frac{1}{4}\times \frac{1}{4}\times \frac{1}{4}\times \frac{1}{4}\times \frac{1}{4}$

= $(\frac{1}{4})^3\times (\frac{3}{4})^2+(\frac{1}{4})^4\times (\frac{3}{4})+(\frac{1}{4})^5$

= $(\frac{1}{4})^3\times (\frac{3}{4})[\frac{3}{4}+\frac{1}{4}+(\frac{1}{4})^2]$

= $(\frac{3}{4^4})[1+\frac{1}{16}]$

= $(\frac{3}{256})[\frac{17}{16}]$

= 0.01171875 × 1.0625

= 0.01245

Thus, the probability that at least 3 out of 5 students receive version A is 0.0124

So, in percent the probability is 0.0124 × 100 = 1.24%

To the nearest tenth, the required probability is 1.2%.

4 0

3 years ago

What’s the transformation

frosja888 [35]

Answer:

Step-by-step explanation:

because 43 - 69 is f u n k y

6 0

3 years ago

which was one cause of the rise of the persian empire? a. the persians forced the people they conquered to convert to zoroastria

sukhopar [10]

The correct answer is D. They merged religious which was from the lands which were conquered with zoroastrian rituals.

The rise of persian empire was because of Cyrus the great and the Achaemenid Empire. People who were defeated by Cyrus they called him law giver and worthy ruler. People who followed him referred t o him as their father.

He build Pasargadae capital city and brought many architectural possibilities.

He allowed people to have their own culture and religion and all the jews who were held by babylonian were being freed.

3 0

3 years ago

Read 2 more answers

The base of a triangle is 10 cm

bonufazy [111]

I’m not sure about this question

4 0

3 years ago