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
Mnenie [13.5K]
3 years ago
5

Solve the system. 4x+y=2 x-y=3

Mathematics
2 answers:
Anettt [7]3 years ago
6 0

Answer:

<h2>x = 1, y = -2 → (1, -2)</h2>

Step-by-step explanation:

\underline{+\left\{\begin{array}{ccc}4x+y=2\\x-y=3\end{array}\right}\qquad\text{add both sides of the equations}\\.\qquad5x=5\qquad\text{divide both sides by 5}\\.\qquad\boxed{x=1}\\\\\\\text{Put the value of}\ x\ \text{to the first equation:}\\\\4(1)+y=2\\4+y=2\qquad\text{subtract 4 from both sides}\\4-4+y=2-4\\\boxed{y=-2}

torisob [31]3 years ago
3 0

Answer:

do i solve by substitution or addition/elimination?  my answer will be in the comments after you've replied

Step-by-step explanation:

You might be interested in
− 4x − 7y = 15<br> 4x − 2y = − 6
BartSMP [9]

Answer:

x= -2 y= -1

Step-by-step explanation:

5 0
3 years ago
What is the value of x?
liraira [26]
It would be 12 because it is just the size of a ruler if you use a online ruler

7 0
4 years ago
Why is 9.6 rational <br> plz help quick...
dangina [55]

The reason that 9.6 is rational is because it can be turned into a fraction.

The fraction is  48/5.

Rational numbers are numbers that can be turned into a fraction, while irrational numbers a those who cannot be turned into a fraction.

6 0
4 years ago
Will mark brainliest answer, please answer !!!
azamat

Answer:

6

Step-by-step explanation:

I'm pretty sure it's 6, sorry if it isn't

8 0
3 years ago
A random sample of 56 lithium batteries has a mean life of 645 hours with a population standard deviation of 31 hours. Compute t
bearhunter [10]

Answer: A. ​(636.9, 653.1)

Step-by-step explanation:

Given : Sample size : n=56

Significance level :\alpha: 1-0.95=0.05

Critical value :z_{0.05}=1.96

Sample mean : \overline{x}=645\text{ hours}

Standard deviation : \sigma= 31\text{ hours}

The 95% confidence interval for population mean is given by :-

\overline{x}\pm z_{\alpha/2}\dfrac{\sigma}{\sqrt{n}}\\\\=645\pm (1.96)\dfrac{31}{\sqrt{56}}\\\\=645\pm8.1\\\\=(636.9, 653.1)

Hence,  95% confidence interval for population mean is (636.9, 653.1).

8 0
3 years ago
Other questions:
  • What is 338.7 rounded to 2 significant figures?
    9·1 answer
  • I need help with number 10
    12·1 answer
  • Write each equation in standard form using integers
    11·1 answer
  • The position of a swimmer below sea level is represented by –5 meters. The diver descends an additional 3 meters below sea level
    14·2 answers
  • 100 points on the line
    7·2 answers
  • What is RU?<br> A.20<br> B.30<br> C.12<br> D.15
    9·2 answers
  • Each cube in this figure is a -centimeter cube. What are the dimensions of the prism? Select all that are true.
    10·1 answer
  • ?????????????????‼️‼️‼️‼️‼️‼️‼️
    14·2 answers
  • 1/5^9=5^? This is a mathy math question please help.
    15·1 answer
  • Solve the inequality for x. –4x + 6 &lt; 50
    6·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!