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
RSB [31]
3 years ago
10

X+y= -9 x+2y= -25 According to the system of equations above, what is the value of y?

Mathematics
1 answer:
Varvara68 [4.7K]3 years ago
6 0
Try this option:
if x+y=-9 is I (one)
and x+2y=-25 is II (two), then
if II-I, then (x+2y)-(x+y)=-25+9 ⇔ y=-16.
You might be interested in
What is the solution to the system of equations below? -4x+6y=-18 and y=-2x+21
Verdich [7]

Answer:

x=9 and y=3

Step-by-step explanation:

Let's solve your system by substitution.

−4x+6y=−18 and y=−2x+21

Rewrite equations:

y=−2x+21;−4x+6y=−18

Step: Solve  y=−2x+21for y:

y=−2x+21

Step: Substitute−2x+21foryin−4x+6y=−18:

−4x+6y=−18

−4x+6(−2x+21)=−18

−16x+126=−18(Simplify both sides of the equation)

−16x+126+−126=−18+−126(Add -126 to both sides)

−16x=−144

−16x

−16

=

−144

−16

(Divide both sides by -16)

x=9

Step: Substitute9forxiny=−2x+21:

y=−2x+21

y=(−2)(9)+21

y=3(Simplify both sides of the equation)

Answer:

x=9 and y=3

3 0
3 years ago
What is the missing number?*
lesya [120]
15 is the missing number
4 0
2 years ago
Please help guys -_-
baherus [9]

Answer:

C. the remainder must always be less than the dividend

5 0
3 years ago
Read 2 more answers
write how much has passed. 10:45 am to 11:15 am. 2:15 pm to 2:30 pm 6:15 am to 6:45 am 3:30 pm to 4:30 pm 9:15 am to 10:00 am
liq [111]

Answer:

1. 30 minutes

2. 15 minutes

3. 30 minutes

4. 60 minutes/ 1 hour

5. 45 minutes

Step-by-step explanation:

1.  60 - 45 = 15

15+15 = 30

2. 30 - 15 = 15

3. 45 - 15 = 30

4. 60 - 30 = 30

30 + 30 = 60

5. 60 - 15 = 45

3 0
3 years ago
Y=x+3 <br> 2x-y=-1<br> write solution as ordered pair
dsp73

The first equation tells you that y=x+3. If you substitute this expression for y in the second, we have

2x-(x+3)=-1 \iff x-3=-1 \iff x=2

And we can deduce y=x+3=2+3=5

5 0
3 years ago
Other questions:
  • In a group of 80 children there are 3 times as many boys as girls how many girls are there
    7·1 answer
  • URGENT HELP PLEASE!
    6·1 answer
  • (x/3)+5=2x-70<br> solve for x<br> what are the steps
    9·2 answers
  • What equation is equivalent to 3(2x-5)=4(x+3)
    14·2 answers
  • The total price of four oranges and five pears is $32 while the total price of three oranges and two pears is $17. How much is a
    8·2 answers
  • What type of algebra is 3.75(18) + 4.25(32) = 316
    11·2 answers
  • Answer to this please ?
    7·1 answer
  • Simplify simplify simplify​
    5·1 answer
  • Polynomial factoring <br> 8x^4+ 10x^2 – 3
    8·1 answer
  • Of the 9 people attending a lecture, 3 have green eyes.
    13·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!