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
zzz [600]
3 years ago
7

What's the solution for 2x 7y=2 x y=-1

Mathematics
1 answer:
Lerok [7]3 years ago
5 0
<span>Simplifying

(2x + -7y ) = 0

Multiply
(2x + -7y) * (x + y) </span><span>
(2x * (x + y) + -7y * (</span><span>x + y)) = 0
</span>((x * 2x + y * 2x) + -7y * (x + y)) = 0<span>

</span>Reorder the terms:
((2xy + 2x2) + -7y * (x + y)) = 0
((2xy + 2x2) + -7y * (x + y)) = 0
(2xy + 2x2 + (x * -7y + y * -7y)) = 0
(2xy + 2x2 + (-7xy + -7y2)) = 0<span>

Reorder the terms:
(2xy + -7xy + 2x2 + -7y2) = 0
</span>
<span>Combine like terms: 2xy + -7xy = -5xy
(-5xy + 2x2 + -7y2) = 0

</span>Solving -5xy + 2x2 + -7y2 = 0<span>

Solving for variable 'x'.

Factor a trinomial. 
(2x + -7y)(x + y) = 0
</span>



You might be interested in
What Does The M And B Stand For In y=mx+b
Misha Larkins [42]

Answer:

The 'm' stands for slope and the 'b' stands for the y-intercept, which is where the line crosses the y-axis.

6 0
3 years ago
Read 2 more answers
Graph Y equals 5X equals 15
Zina [86]

Answer:

y

=

4

5

x

−

15

Step-by-step explanation:

3 0
3 years ago
1) Jessica charges $8 an hour for babysitting
nordsb [41]
A. The independent variable is time, as time is manipulating the value of her salary.

b. The dependent variable is her cost because what she charges for babysitting depends on how long she works.

c. y = 8x
y = how much she charges for this job
8 = the amount she charges per hour
x = number of hours babysat
6 0
3 years ago
Select the correct answer.<br> Which statement is true?
dusya [7]

Answer:

third option is the correct

Step-by-step explanation:

A function is "odd" when f (-x) = - f (x) for all x. ... For example, functions like

  • f (x) = x3,
  • f (x) = x5,
  • f (x) = x7, ... are odd functions.
6 0
2 years ago
Read 2 more answers
Shaun has five coins in his pocket. If he empties the coins onto a table, what is the probability that all five coins will land
Anastasy [175]

Answer:

A. 1/32

Step-by-step explanation:

Ok, the probability for one of the coins to land on heads is 1/2 cause a coin have to sides and chance is 50% that it will land on either of its sides.

If you have 2 coins the probability will be 1/2 for the first coin to land on heads and 1/2 for the second one. The overall probability for 2 coins would be (1/2)*(1/2)=1/4. You could also see it is 1/4 because all of the possible combinations of 2 coins are 4 (HH, HT, TH, TT) and HH is one of four.

It's the same if you have 5 coins. The probability will be (1/2)*(1/2)*(1/2)*(1/2)*(1/2)=1/32 in other words HHHHH is one of 32 possible combinations of 5 coins.

5 0
3 years ago
Other questions:
  • A regular octagon rotates 360° about its center. How many times does the image of the octagon coincide with the preimage during
    8·1 answer
  • A border of uniform width is placed around a rectangular photograph that measures 8 inches by 10 inches. If the area of the bord
    11·1 answer
  • Solving equations, thank you!
    15·1 answer
  • What do you know to be true about the values of p and q?
    12·1 answer
  • What is 25% out of 120
    9·2 answers
  • Evaluate xy-(-2z) for x=10, y=2, and z=-3. <br><br> a. 6<br> b. 26<br> c. 16
    15·2 answers
  • Which of the ordered pairs is<br> 4x – 1= 3y + 5
    11·1 answer
  • Define the variables for the situation. Then enter an equation.
    13·1 answer
  • Learning Task No. 1
    12·1 answer
  • While on vacation, the Washington family stayed in a hotel for 8 nights. The hotel room cost $1,100. The hotel-tax rate in the c
    9·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!