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
OverLord2011 [107]
3 years ago
13

How did they get this

Mathematics
2 answers:
alexandr1967 [171]3 years ago
7 0
It's only true if  x=2  and  y= -1 .
katrin2010 [14]3 years ago
3 0
Somewhere in the text, it must say that x = 2 and y = -1 or else, the values just seem made up out of thin air. 
You might be interested in
Solve the following system algerbraically: y=-3(x-2) squared+4 y=-6x+16
pishuonlain [190]

y =  - 3(x - 2) ^{2}  + 4
y =  - 6x + 16
distribute the -3 and the square into the first equation
y =  - 3x ^{2}  + 12x - 8
y =  - 6x + 16
multiply the second equation by 2
y =  - 3x ^{2}  + 12x - 8
y =  - 12x + 32
add the equations together
y =  - 3x ^{2}  + 24
factor out -3
y =  - 3(x ^{2}  - 8)
factor inside parenthesis
y =  - 3(x +  \sqrt{8} )( x -  \sqrt{8})
refine
y =  - 3(x + 2 \sqrt{2} )(x - 2  \sqrt{2} )

8 0
3 years ago
3/8x - 1/4 =1/2<br><br> Please hurry
4vir4ik [10]

Answer:

x=2

Step-by-step explanation:

hope this helps :)

7 0
3 years ago
Question:
AleksandrR [38]

Answer:

x=8 and y=3 (So, yes!)

Step-by-step explanation:

I will solve your system by substitution.

(You can also solve this system by elimination.)

−x+4y=4;−x+3y=1

Step: Solve −x+4y=4 for x:

−x+4y+−4y=4+−4y(Add -4y to both sides)

−x=−4y+4

-x/-1 = -4y+4/-1 (Divide both sides by -1)

x=4y−4

Step: Substitute 4y−4 for x in −x+3y=1:

−x+3y=1

−(4y−4)+3y=1

−y+4=1(Simplify both sides of the equation)

−y+4+−4=1+−4(Add -4 to both sides)

−y=−3

-y/-1 = -3/-1 (Divide both sides by -1)

y=3

Step: Substitute 3 for y in x=4y−4:

=4y−4

x=(4)(3)−4

x=8(Simplify both sides of the equation)

<u>Answer:</u>

x=8 and y=3

4 0
2 years ago
34 + 4 ⋅ 5 = ____. (Input whole numbers only.)
muminat

Answer:

54

4 x 5 = 20

20 + 34 = 54

6 0
3 years ago
Read 2 more answers
Evaluate 0.00048×0.81×10×(10)-7 ÷0.027×0.04x(10)6​
alexandr402 [8]

Answer:

Step-by-step explanation:

0.00048*.81=0.0003888

0.0003888*10=0.003888

0.003888*(10)=0.3888

0.3888-7=-6.6112

-6.6112*0.027=-224.8592593

-224.8592593*0.04= -9.794370372

-9.794370372*(10)=-97.94370372

-97.94370372*6= -587.6622223

5 0
2 years ago
Other questions:
  • Suppose the demand for a certain item is given by:
    8·1 answer
  • What is 1,537x242?<br> You can get ten points by answering this plz help me.
    5·2 answers
  • Combine like radicals to get your answer. <br><br> image attached
    9·1 answer
  • |–9.23 – 1.79| – |–7.34 – 2.57| (25 points)
    6·2 answers
  • When a certain type of thumbtack is tossed, the probability that it lands tip up is 20%, and the probability that it lands tip i
    6·1 answer
  • PLEASE HELP!!!!!!! DESPERATE!!!! 20 points!!!!!
    5·1 answer
  • Identify the cross section that results from slicing the three-dimensional figure with a plane that is parallel to its base
    9·2 answers
  • I don't know how to do this ? can someone help me please​
    10·1 answer
  • Here, plz help bro!!! giving brainly
    9·2 answers
  • Help with this question here please
    5·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!