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
yulyashka [42]
3 years ago
13

Which ordered pair is the best estimate of the solution of the system 3x+y=4 x-3y=4?

Mathematics
1 answer:
vovangra [49]3 years ago
6 0
3x+y=4\ \ \ \ \ \ ..............equation(1)\\x-3y=4\ \ \ \ \ \ ..............equation(2)\\\\ Using~equation~(2), \\\\
x-3y=4\\x=4+3y\\\\Now,\ using\ the\ value\ of\ x\ in\ equation\ (1),\ we\ get,\\\\(4+3y)-3y=4\\\\4=4

Since all the variables cancel out and the coefficient equal to eachother, this system of equation has <u>infinitely many solutions!</u>
You might be interested in
Decimal work<br><br> 4.5 divided by 0.56<br><br> (brainliest if you get it right)
fredd [130]

Answer:

8.03 or 8.035714 and some other numbers that i cant bother to write out. also as a fraction it would be 803/100

7 0
2 years ago
Read 2 more answers
Help me with this please
aniked [119]
It's the last answer. Think about when you move a point on a graph left 4 spaces it's on the x axis. Because it's going left it's going towards the negative numbers hence minus and not plus. some concept for the y axis.
4 0
3 years ago
You invested $27,200 and started a business selling vases. Supplies cost $11 per
AleksAgata [21]
1,600 vases must be produced and sold to break even.

x($28-$11)=$27,200
Simplify to 17x=27,200
Divide 17x by 17 so it cancels out.
What you do to one side of the equation you have to do to the other.
27,200/17=1,600
x=1,600
6 0
2 years ago
The reacttimes data set has 50 observations of human reaction times to a physical stimulus. The reaction times are named times a
scoundrel [369]

Solution: The formula for mean is:

Mean=\frac{\sum x}{n}

Where:

\sum x is the sum of given observations

n is the number of observations

\sum x=87.12

n=50

\therefore Mean =\frac{87.12}{50}= 1.74 rounded to two decimal places

To find the median, we need to first arrange the data in ascending order but we are already given the data in ascending order.

Therefore, the median is:

Median=\left(\frac{n+1}{2} \right)^{th} item

                  =\left(\frac{51}{2} \right)^{th} item

                  =25.5^{th} item

                  =1.52+0.5(1.54-1.52)

                  =1.52+0.01

                  =1.53

Therefore, the median = 1.53

4 0
3 years ago
Helpp please!! 10 points
Zolol [24]
Slope is 1.3

take your 2 points and make a triangle, then count the small boxes to the point in the middle where they met. ( REMEMBER THE X&Y RULES)
you should get 4/3, you need to divide and put it into decimal form.
GOOD LUCK! :))
8 0
3 years ago
Other questions:
  • Please help me!! Will give brainliest!!​
    7·1 answer
  • Evaluate the expression 6(3)^-3
    8·1 answer
  • What is the event space for rolling a number greater than 1 with one die
    6·2 answers
  • Given that the domain is all real numbers, what is the limit of the range for the function ƒ(x) = 42x - 100?
    15·1 answer
  • (-4,0) reflected across y=0 is it <br><br> A)(-4,0)<br> B)(4,0)<br> C)(-4,-2)<br> D)(0,0)
    15·2 answers
  • Determine the root of the equation
    13·1 answer
  • Find the distance between the two points rounding to the nearest tenth (if
    14·2 answers
  • The points (-3, -3) and (5, r) lie on a line with slope 3/2<br> Find the missing coordinate r.
    15·1 answer
  • EXPERT HELP: EXPLAIN THE ANSWER AND DON'T GUESS
    5·2 answers
  • Evaluate the expression for x = -2, y = 3, and a = -4 <br><br>5x-6y-3a ​
    7·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!