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Tatiana [17]
3 years ago
14

Which are solutions of x2 5x = 2? check all that apply. startfraction 5 over 2 endfraction startfraction startroot 33 endroot ov

er 4 endfraction startfraction 5 over 2 endfraction startfraction startroot 33 endroot over 2 endfraction startfraction 5 over 2 endfraction minus startfraction startroot 33 endroot over 2 endfraction startfraction negative 5 over 2 endfraction minus startfraction startroot 33 endroot over 2 endfraction startfraction negative 5 over 2 endfraction startfraction startroot 33 endroot over 2 endfraction
Mathematics
1 answer:
Verizon [17]3 years ago
4 0

Answer:

x = -5/2  + root(33)/2   or   x = -5/2 - root(33)/2

Step-by-step explanation:

ok so your computer is

saying:

x^2  + 5x = 2

and takes the 5 divides it by 2  and squares the result

x^2  + 5x  +  25/4    =   2 + 25 /4   but then   replaces a trinomial with a binomial

(x + 5/2)^2  =  2 + 25/4 =  33/4

solving

x = -5/2  + root(33/4)   or   x = -5/2 - root(33/4)

or

x = -5/2  + root(33)/2   or   x = -5/2 - root(33)/2

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Paul [167]
5.0 lb of bananas will be the weight
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3 years ago
What is the answer too 6+3=x-8?
LuckyWell [14K]

Answer:

x = 17

Step-by-step explanation:

8 0
3 years ago
I can’t understand 21-23 can someone solve or explain them please (geometry)
k0ka [10]
21. <DBE and <ABE are both equal halves of <ABD, so in this case, m<ABE = m<DBE, so all you have to do is solve the equation:

6x + 2 = 8x - 14
add 14 to both sides, subtract 6x from both sides.
16 = 2x
Divide both sides by two. The solution is x = 8. To find m<ABE, replace x with 2, so your final answer is 14. m<ABE = 14

22. From what we know from 21, m<ABE = m<EBD, so keep that in mind. We still have to solve for m<EBD. Since one line is 180 degrees, we are able to write out this equation using the information given:

180 = 9x - 1 (m<ABE) + 9x - 1 (m<EBD) + 24x + 14 (m<DBC)
simplify this:
180 = 12 + 42x
subtract 12 from both sides, then divide by 42.
4 = x
Now we plug this in.
4 × 9 = 36. 36 - 1 = 35.
m<EBD = 35

23. From the past two equations, we know m<ABE consistently equals m<EBD. This means that, if they are bisectors of a right angle, they both equal 45 degrees. here is our equation:

45 = 13x - 7.
we add seven to both sides and divide by 13.
4 = x
3 0
4 years ago
Solve -5 √x =-15<br> A. X= -9<br> B. X= -7<br> C. X= 9<br> D. X= 7
Leokris [45]
Divide both sides by -5
You would then get (square root)x=3 since the negatives would cancel out
Then you square both sides
You will be left with (x)*2=(3)*2
Your answer will be C. X=9
Hope that helped!
8 0
3 years ago
Read 2 more answers
I really need help with this:(( can someone also explain!
MArishka [77]

The best thing to do is to break it down to very small parts.

You are dealing with a sum. The first phrase says

10 +

Never mind the rest of it for now. Just make sure you understand that you are adding 10 to something.

The next part of the question a quotient. You have to understand exactly what that means. If you divide 15 by three, you would write that as 15/3 The answer you get is 5. 5 is the quotient. It's a fancy way of saying answer.

Algebra isn't so nice. There is no way to get an answer when you do a division with a number and a letter. You have to be content with just showing how it is done.

So the next phrase is x divided by 6. And you show that as x/6

So what do you have? 10 + something which is where we left off. The something is x/6

Answer

10 + x/6

7 0
3 years ago
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