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
olga nikolaevna [1]
3 years ago
12

Solve the system of equations -x+ 2y = –11 and 5x – 8y = 39 by combining the equations.

Mathematics
1 answer:
Alchen [17]3 years ago
3 0

Answer:

x=-5, y=-8. (-5, -8).

Step-by-step explanation:

-x+2y=-11

5x-8y=39

---------------

5(-x+2y)=5(-11)

5x-8y=39

---------------------

-5x+10y=-55

5x-8y=39

--------------------

2y=-16

y=-16/2

y=-8

-x+2(-8)=-11

-x-16=-11

-x=-11+16

-x=5

x=-5

You might be interested in
What is 6 1/3−1 2/3?
kolbaska11 [484]

Answer:

4 2/3!

Step-by-step explanation:

5 0
3 years ago
Read 2 more answers
Plz help me <br> I really appreciate it
Serga [27]

Answer:

a = 45°

Step-by-step explanation:

In triangle PSR

PS = RS (Given)

angle SPR = angle SRP (isosceles triangle property)

Let angles SPR and SRP be x

Therefore, 90° + x + x = 180° (angle property)

=> 90° + 2x = 180°

=> 2x = 180° - 90° = 90°

=> 2x = 90°

=> x = 90° ÷ 2 = 45°

=> x = 45°

Hope it helps:)

3 0
3 years ago
A company surveyed 140 people and found that 35 of them went to the library at least once per week. If the town these people liv
Advocard [28]

Answer:

525

Step-by-step explanation:

Set up a ratio 35/140=?/2100. Solve this to get the answer.

5 0
3 years ago
HELP PLS LAST ONE<br> Simplify (4y³ – 2y +9) − (2y³ − 3y² + 4y + 7).
Fynjy0 [20]
Simplifed: 2y^3+3y^2−6y+2
3 0
2 years ago
Identify two composite numbers that each have 8 as a factor
Black_prince [1.1K]
Two composite numbers that have 8 as a factor are 16 and 24. I hope this helps.
3 0
3 years ago
Other questions:
  • What is a subtraction equation with a difference of 54.57?
    11·1 answer
  • What is 1188.28856995 to the nearest ten
    5·2 answers
  • A football field has the shape of a rectangle with dimensions of 300 feet long and 160 feet wide. If a fan was to run diagonally
    12·2 answers
  • What is the answer to 1 4/5 x 2 1/4
    5·1 answer
  • If a yard is 3 feet long how many inches are in a yard
    5·2 answers
  • Solve for x:<br><br> 3x/2 - 10 = 2<br> A) 2 <br> B) 4 <br> C) 6 <br> D) 8
    12·2 answers
  • Explain how to estimate the quotient using compatible numbers.<br><br> 27 2/3 divided by 3 9/10
    10·1 answer
  • Zora Omar had a balance of $1,189.17 in her checking account. She wrote checks for $62.41, $224.14,
    9·1 answer
  • What is 9,167 364 written in expanded form?
    11·1 answer
  • Will give brainliest if helpful and correct
    5·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!