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
ira [324]
3 years ago
14

Solve the following system of equations:

Mathematics
1 answer:
MariettaO [177]3 years ago
3 0

Answer:

(1,3)

Step-by-step explanation:

\sf Answer\begin{cases} \sf \rightarrowtail \:  - 2x + y = 1 \dots(1) \\  \sf \rightarrowtail \:  - 4x + y =  - 1 \dots(2) \\ \sf 2 \times (1) \implies - 4x + 2y  = 2 \\ \sf 1 \times (2) \implies - 4x + y =  - 1 \\  \bf \star \: substracting \: both \\  \sf \rightarrowtail \: y = 3 \\  \sf \rightarrowtail \: -2x+(3)=1 \\ \sf \rightarrowtail \: -2x=-2 \\  \sf \rightarrowtail \: x=1\end{cases}

You might be interested in
HELP THIS IS SO IMPORTANT
LekaFEV [45]

Answer:

variable = s

sum = 10

product = 20

i dont know the last one

brainlest please

Step-by-step explanation:

7 0
3 years ago
Read 2 more answers
Find the value of a and explain
Irina-Kira [14]

Answer:

D

Step-by-step explanation:

The triangle is an isosceles triangle which means that two sides are the same, A is the same size of the equal side so A is D.

3 0
3 years ago
Read 2 more answers
MY PFPPPPPPPPPPPPPPPPPPPPPP WHAT HAPPENED!???
rjkz [21]

Answer:

I don't know what happened to your profile picture... I don't know if mods can remove/change pfps, but if so, then that could be the case -- especially if your pfp challenged Brainly's rules and community guidelines. Then again, it could have just been you...

Step-by-step explanation:

8 0
2 years ago
Read 2 more answers
if someone could please please help me with this I would appreciate it , if you could also explain your answer that would be gre
weqwewe [10]

Answer:

height for the building = 551.8 ft

Step-by-step explanation:

The info given describes the shape of a right triangle.

Thus:

Reference angle = Angle of elevation = 23°

Opposite side = height of the building = ?

Adjacent side = 1,300 ft

Apply trigonometric function, TOA:

Tan 23 = Opp/Adj

Tan 23 = Opp/1,300

1,300 × Tan 23 = Opp

551.817261 = Opp

Opp ≈ 551.8 ft

height for the building = 551.8 ft

3 0
2 years ago
Please help I’m really need the help (NO LINKS ) (NO LYING ) PART 2 again
ohaa [14]

Answer:

A. 15

B. 25.6

C. 41.6

Step-by-step explanation:

You need to divide

6 0
2 years ago
Other questions:
  • Please show work! Thank you
    14·1 answer
  • What is the measurement of angle 3?
    7·1 answer
  • 4) How many km in<br> 58,795cm?<br><br><br> Please help thanks!!
    8·1 answer
  • Explain why P(AD) and P(DA) from the table below are<br> not equal<br> Total<br> Total
    5·1 answer
  • Max and Sven bike away from home in the same direction starting at noon. They bike at constant speeds. Max bikes at xmph and he
    6·1 answer
  • WILL FAN AND MEDAL PLEASE HURRYYYYYY
    5·1 answer
  • I need help on this question
    12·1 answer
  • What’s the cop for y=4x
    14·2 answers
  • Leonard has twice as much money as Danny. If Leonard has x dollars, then Fanny has
    7·1 answer
  • Quis<br>bentuk pangkat dari<br>2² + 3² - 2²=<br>note:. user Indonesia​
    13·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!