1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
emmasim [6.3K]
3 years ago
13

Help solve write the function for the graph

Mathematics
1 answer:
Natasha2012 [34]3 years ago
7 0

Answer:

A?

Step-by-step explanation:

You might be interested in
If x+y=12 and xy=15,find the value of (x^2+y^2)
Mice21 [21]

Answer:  x^2+y^2=\dfrac{105\pm 18\sqrt6}{2}

<u>Step-by-step explanation:</u>

EQ1:  x + y = 12     --> x = 12 - y

EQ2:  xy = 15      

Substitute x = 12-y into EQ2 to solve for y:

(12 - y)y = 15

12y - y² = 15

0 = y² - 12y + 15

    ↓     ↓         ↓

  a=1   b= -12   c=15

.\  y=\dfrac{-b\pm \sqrt{b^2-4ac}}{2a}\\\\\\.\quad =\dfrac{-(-12)\pm \sqrt{(-12)^2-4(1)(15)}}{2(1)}\\\\\\.\quad =\dfrac{12\pm \sqrt{144-120}}{2}\\\\\\.\quad =\dfrac{12\pm \sqrt{24}}{2}\\\\\\.\quad =\dfrac{12\pm 2\sqrt{6}}{2}\\\\\\.\quad =6\pm \sqrt{6}

Now, let's solve for x:

xy=15\\\\x(6\pm\sqrt6)=15\\\\x=\dfrac{15}{6\pm\sqrt6}\\\\\\x=\dfrac{15}{6\pm\sqrt6}\bigg(\dfrac{6\pm\sqrt6}{6\pm\sqrt6}\bigg)=\dfrac{6\pm \sqrt6}{2}

Lastly, find x² + y² :

y^2=(6\pm \sqrt6)^2\quad \rightarrow \quad y^2=36\pm 12\sqrt6 +6\quad \rightarrow \quad y^2=42\pm 12\sqrt6

x^2=\bigg(\dfrac{6\pm \sqrt6}{2}\bigg)^2\quad \rightarrow \quad x^2=\dfrac{42\pm 12\sqrt6}{4}\quad \rightarrow \quad x^2=\dfrac{21\pm 6\sqrt6}{2}

                                                                                 

x^2+y^2=\dfrac{21\pm 6\sqrt6}{2}+42\pm 12\sqrt6\\\\\\.\qquad \quad = \dfrac{21\pm 6\sqrt6}{2}+\dfrac{84\pm 24\sqrt6}{2}\\\\\\. \qquad \quad = \dfrac{105\pm 18\sqrt6}{2}

5 0
3 years ago
What 2 numbers add up to get -1 and multiply to get -20
Dovator [93]
The two numbers that add up to get -1 and multiply to get -20 are -5 and 4
-5*4=-20
-5+4=-1
I hope this helps
3 0
3 years ago
Whats the answer to this question?
forsale [732]

Answer:

0.67%

Step-by-step explanation:

2/300

3 0
3 years ago
Read 2 more answers
PLEASE HELP ASAP 25 PTS + BRAINLIEST TO RIGHT/BEST ANSWER
LUCKY_DIMON [66]

Answer:  d

Step-by-step explanation: when you bring 3 into the square root, it becomes isqrt(63). when you apply i, it makes the number sqrt(-63)

pretty sure I did it right this time

7 0
3 years ago
Read 2 more answers
5, 6, 10 Question: A. Determine whether the side lengths form a triangle. (explain your reasoning) B. If it is a triangle, deter
expeople1 [14]

Answer:

The right answer is C

Step-by-step explanation:


3 0
3 years ago
Other questions:
  • if f(x) and it’s inverse function, f-1(x) are both plotted on the same coordinate plane, what is their point of intersection?
    10·2 answers
  • Who wants free brainlist
    14·2 answers
  • Can you answer this Q plzz?
    8·1 answer
  • If you subtract 5 1/2 minus 2 1/8, how much is it?
    10·2 answers
  • Please check my answer. finals question. will give brainliest
    8·1 answer
  • You own a flower shop. You regularly order roses and carnations and want to check the pricing. You cannot find the pricing infor
    8·1 answer
  • Which is equivalent to V1,215' ?<br> 0 243<br> O 1,2155<br> O 1,2153<br> o 243 *<br> 2437
    11·1 answer
  • On a coordinate plane, a straight line with a positive slope begins at point (0, 50) and ends at point (5.5, 600).
    7·2 answers
  • Just need a little help thanks
    11·1 answer
  • What is the distance between (-25, -3) and (1, -3)?
    12·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!