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xxTIMURxx [149]
2 years ago
10

Help me pleaseeeeeeeeeeede

Mathematics
1 answer:
nekit [7.7K]2 years ago
6 0
What does the spaces in between the numbers mean
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X^2-49=0 solve using the quadratic formula plz help asap
AVprozaik [17]
Add 49 take the square root, answer is +-7
5 0
3 years ago
Urgent Please Help<br> Add The Fractions<br> -4 1/4 -1 2/5
kozerog [31]
The answer to this is -7/5
3 0
2 years ago
For which distributions is the median the best measure of center?<br> select each correct answer.
emmainna [20.7K]

Step-by-step explanation:

you have to add all of the together so like graph number 1 add all those numbers together and then divide by how much numbers there are and that is the median

7 0
3 years ago
How do you differentiate y = 3x3 - 2x-4
riadik2000 [5.3K]

Answer:

y' = 9x^2 + 8x^-5

Step-by-step explanation:

General Principle

y' = ax^b

y' = a*b * x^(b-1)

Solution

3x^3 = 3*3x^(3-1)

3x^3 = 9x^2

-2x^-4  = -2*-4 x ^(-4 - 1)

-2x^-4 = 8 x ^-5

Answer

y' = 9x^2 + 8x^-5

7 0
3 years ago
Using the factorised trinomial <img src="https://tex.z-dn.net/?f=%28n-2%29%284n-7%29" id="TexFormula1" title="(n-2)(4n-7)" alt="
andrew-mc [135]
4n² - 15n + 14<span> is always the product of two numbers, for it to be prime number, one of these factors must be either 1 or -1.

Case n - 2 = 1
That would be n = 3
Then </span>4n² - 15n + 14<span> = 5 , which is prime.

Case n - 2 = -1
That would be n = 1
Then </span>4n<span>² - 15n + 14 = 3, which is also prime.

Case 4n - 7 = 1
That would be n = 2 and that makes other factor (n-2) zero so it's not prime

Case 4n-7 = -1
That would be n = 3/2 which is not integer, so </span>4n<span>² - 15n + 14 will not be interger.

For any other n values, </span>4n<span>² - 15n + 14 will be composite number since it is product of two factors.

Therefore we are left with n = 1 and n = 3; only two values of n.</span>
5 0
2 years ago
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