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
aliina [53]
3 years ago
7

What is the solution to the system of equations below?

Mathematics
1 answer:
mixer [17]3 years ago
5 0

\left\{\begin{array}{ccc}y=\frac{1}{2}x-4\\y=-2x-9\end{array}\right\Rightarrow\dfrac{1}{2}x-4=-2x-9\\\\\dfrac{1}{2}x-4=-2x-9\ \ \ |\cdot2\\\\x-8=-4x-18\ \ \ |+8\\\\x=-4x-10\ \ \ |+4x\\\\5x=-10\ \ \ |:5\\\\\boxed{x=-2}\\\text{substitute the value of x to the second equation}\\y=-2(-2)-9=4-9=-5\\\boxed{y=-5}\\\\\text{Answer:}\ x=-2;\ y=-5\to(-2;-5)

You might be interested in
She works as a waitress at a local Emerald Monday restaurant. Her regular hourly wage is $15.50. She regularly works 40 hours pe
lina2011 [118]

Answer:

Her regular weekly pay is $62 and her annual salary is $3100.

Step-by-step explanation:

Given that her hourly wage=$15.50 / hour

As she works 40 hours per week, so her weekly pay = 15.50 x 40 = $62/ week.

If she works 50 weeks each year, so her yearly pay = 62x50=$3100 /year.

Hence, her regular weekly pay is $62 and her annual salary is $3100.

8 0
2 years ago
Which problem solving strategy would be best to solve this problem? How many different ways can you give change for 45 cents?
hodyreva [135]
I think A since working backwards and looking for a pattern wouldn't help, maybe C but im not sure
6 0
3 years ago
Read 2 more answers
Can you guys please help me?! it’s due tomorrow and i don’t know the answers :(
Vlada [557]

Answer:

I think it is the second one because -4 is the least

Step-by-step explanation:

4 0
2 years ago
Read 2 more answers
F/4 + 16 &lt; 49<br> Solve the inequality
Mnenie [13.5K]

Answer:

f < 132

Step-by-step explanation:

Greetings!

I'm~Isabelle~Williams~and~I~will~be~answering~your~question!

Subtract~16~from~both~sides:

\frac{f}{4} +16-16 < 49-16

Simplify:

\frac{f}{4} < 33

Now,~multiply~both~sides~by~4:

\frac{4f}{4} < 33\times4

f < 132

Hope~my~answer~helps!~Have~a~great~day~ahead!

-Isabelle~Williams

5 0
3 years ago
I need help!!!! I don’t understand and it’s very confusing
irga5000 [103]

Answer:

C

Step-by-step explanation:

I explained in my last answer but someone deleted it

5 0
2 years ago
Other questions:
  • How do i solve the inequality 55 &gt; -7v +6
    10·1 answer
  • What is the value of x? <br><br> x=
    15·1 answer
  • What is 2 thirds plus 3 sevenths
    11·2 answers
  • Malik borrowed $105 from his brother and plans to repay $12 per week. He creates a table to help him determine the number of wee
    14·2 answers
  • If the point (2/3,y) is on the unit circle, what is y?
    7·1 answer
  • What is the answer to 1 4/5 x 2 1/4
    5·1 answer
  • An airplane's change in altitude before landing is shown in the table. what equation represents this change in altitude?
    6·1 answer
  • Mary is making some shirts for her school’s drama department. De fabric store has three and one sixths yards of the fabric she w
    15·1 answer
  • Determine whether each ordered pair is a solution to the inequality x+y&gt;−2.
    7·1 answer
  • What is the are a square with a side length of 3x + 4.
    13·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!