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
tensa zangetsu [6.8K]
3 years ago
12

Can someone help me PLZ! I keep posting the same question and no ones helping me :((((((((((((

Mathematics
1 answer:
kipiarov [429]3 years ago
3 0

Answer:

Multiply x + y = 3 by 3 and add it to -3x - 2y = -7

Step-by-step explanation:

When using elimination to solve a system of equations, you multiply one equation by some number. The reason for doing this is that when you add it to the second equation, you want one variable to cancel out. When one variable cancels out (in this case x), you can solve for the other variable (in this case y). I will show this:

3(x + y = 3) = 3x + 3y = 9

   3x +  3y =  9

+ -3x + -2y = -7

---------------------------

              y  = 2

Now, knowing that y = 2, you can substitute y=2 into either equation to solve for x.

-3x - 2(2) = -7

-3x -4 = -7

-3x = -3

x = 1 | to double check (1, 2) as your answer plug these values into both equations

Finding this solution would not have been possible if not for cancelling out the x's above. The other three are wrong because none of the other options cancels out one of the variables.

You might be interested in
10 more than the width the area is 336 square feet find the length and width of the rectangle
prohojiy [21]

Answer:

hgcfkfc

Step-by-step explanation:

7 0
3 years ago
Anyone know how to solve this?
Dmitry_Shevchenko [17]

Answer:

whats the question..?

Step-by-step explanation:

7 0
3 years ago
Which word best describes the degree of overlap between the two data sets? Low, High, None, Moderate
zlopas [31]

Answer:

In case of data set given with the question, the word that best describes the degree of overlap between the two data sets is low.

Step-by-step explanation:

Overlapping of two data sets means they contain common data or they have common elements in them.  

In case of given data set, the elements are represented by 'x'.

If we compare both, the elements at line 30 and 35 overlap.

We conclude that out of 15 elements in each data set,  only two of them overlaps. Hence the degree of overlap is low.

6 0
3 years ago
Find the value of [-3/7] raised to the power -2<br><br> and (3) raised to the power -4
xenn [34]
(3)^-4 = 0.01234567901
(-3/7)^-2 = <span>5.44444444444</span>

7 0
3 years ago
How do I find the exact product of 379 &amp; 8?
xxMikexx [17]
Product means the result you get after multiplying. So you have to multiply the two numbers. 379*8 = 3032
5 0
3 years ago
Other questions:
  • kate is saving to take an sat prep course that costs $350, so far , she has saved $180, and she adds $17 to her savings each wee
    8·1 answer
  • What is the value of a1 in the sequence?<br><br> −4,−2,−1/2,−1/4,...
    14·2 answers
  • If g(t) = sec(t), what is g(-3 π )?
    11·2 answers
  • An academic adviser wanted to investigate the amount of money spent by students on textbooks. She randomly sampled 25 students a
    15·1 answer
  • A metal washer 1-inch in diameter is pierced by a 1/2 - inch hole. What is the volume of the washer if it is 1/8 - inch thick?
    6·1 answer
  • Add 5 to me then you divide by 7 if you add 12 then subtract 7 you get 10 what number am i
    6·2 answers
  • Which set of measurements could be the side lengths of a right triangle?
    8·1 answer
  • Lisa, Kelly, and Maria have $56.70. If Lisa has $23.20 and Kelly has $15.05, which equation shows how much money, n, Maria has
    14·2 answers
  • Help, will give brainiest!
    11·1 answer
  • Consider 8x-4 = 8^10
    11·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!