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
gtnhenbr [62]
3 years ago
6

Solve the elimination. 5x+7y=-1 4x-2y=22

Mathematics
1 answer:
Andreyy893 years ago
6 0

\left\{\begin{array}{ccc}5x+7y=-1&\text{multiply both sides by 2}\\4x-2y=22&|\text{multiply both sides by 7}\end{array}\right\\\underline{+\left\{\begin{array}{ccc}10x+14y=-2\\28x-14y=154\end{array}\right}\qquad\text{add both sides of the equations}\\.\qquad38x=152\qquad\text{divide both sides by 38}\\.\qquad \boxed{x=4}\\\\\text{Put the value of x to the first equation:}\\\\5(4)+7y=-1\\20+7y=-1\qquad\text{substract 20 from both sides}\\7y=-21\qquad\text{divide both sides by 7}\\\boxed{y=-3}\\\\Answer:\ \boxed{x=4\ and\ y=-3\to(4,\ -3)}

You might be interested in
A 9.3 m<br> b. 13.3 m<br> C. 18 m<br> d. 21 m<br><br> Which answer is it
Novosadov [1.4K]

Answer:

I would say A

Step-by-step explanation:

hmu if you need more help

7 0
3 years ago
PLZ HELP ASAP IM ON THE TEST Richie and Saul are conducting a survey on the most popular board games played by students at their
9966 [12]
Saul will be right because he is surveying every type of 9-12 grade, and he included both male and female students in his sample. 
8 0
3 years ago
Read 2 more answers
Explain how you would use properties do you write an expression equivalent to 7y+4b-3y.
erica [24]
1st you combine like terms so subtract 7y and 3y and you get 4y. So this is the final answer: 4y+4b.
5 0
3 years ago
MARKING BRAILIEST!!!! Select the statement that describes this expression: 13 + fraction 1 over 2 x (6 ÷ 2 + 6)
Sauron [17]

Answer: D

You get the same answer from doing both!

3 0
3 years ago
Read 2 more answers
The fair market rental rate for Fort Wayne was $611 in 2011 and $567 in 2005. Find the unit rate of change for rent in Fort Wayn
Feliz [49]

If you assume the rental cost changes in a linear fashion, the change over 6 years was $44. The "unit rate of change" is then $44/(6 years) ≈ $7.33/year.

5 0
3 years ago
Other questions:
  • During a certain period of time, a car can cover the distance of 120 miles, going at an average speed of 55 mph. What distance o
    15·1 answer
  • Jason hires groundskeepers. They work an average of 60 hours per month. If seven groundskeepers are hired at $12/hour, what is t
    14·1 answer
  • Can someone please help me with this algebra question? Image attached.
    8·1 answer
  • Vicki set a goal for herself to take at least 10,000 steps per day. According to her pedometer, she has walked 5,274 steps.
    12·2 answers
  • What is one and a half times a right angle?
    14·1 answer
  • What is the solution, s+4t=r solve for s
    15·2 answers
  • 4 1/2÷3/4 explanation plz I need help
    8·1 answer
  • A card is selected at random from a deck of 52 playing cards, the probability that a card 2 is selected will be ______________.
    14·2 answers
  • Please help.... Milo bought 12 nails for $6.
    5·1 answer
  • What is the area of this shape?
    12·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!