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
Nadusha1986 [10]
1 year ago
8

X − y = 12 x + 2y = 21

Mathematics
1 answer:
olga55 [171]1 year ago
5 0

Answer: x=15, y=3

Step-by-step explanation:

Subtracting the two equations, we get -3y=-9, meaning y=3.

Substituting this into the first equation, we get that x-3=12, and thus, x=15.

You might be interested in
Need help please thanks you
Nataly [62]
A + C = 90/190

B + D = 100/190

Therefore answer is H
4 0
2 years ago
GIVING 50 POINTS FOR THE FIRST 2 PEOPLE
pochemuha

Answer:Thanks

Step-by-step explanation:

7 0
2 years ago
Read 2 more answers
Practice: triangle sum theorem on a piece of paper solve for the variable , then find the missing angles
MariettaO [177]
1) x=-3. The missing angle is 71 degrees
2) x=45. The missing angles are 90 and 45 degrees.
3) x=40. The missing angles are 40 and 100 degrees
3 0
2 years ago
A tire company produced a batch of 5 comma 900 tires that includes exactly 260 that are defective. a. If 4 tires are randomly se
Citrus2011 [14]
The answer is 12 I promise
7 0
2 years ago
The area of a rectangle is 72 cm2. State the dimensions of the rectangle with the least perimeter. Calculate the perimeter.
Nitella [24]
We know that
<span>Of all the rectangles having same area, square has the least perimeter
</span>
area of square=x²
where
x is the length side of the square
A=72 cm²
72=x²
x=√72-----> x=6√2 cm

Perimeter of square=4*x------> 4*(6√2)-----> P=24√2 cm
P=33.94 cm

the answer is
the perimeter is equal to 24√2 cm or 33.94 cm

5 0
2 years ago
Other questions:
  • Hey folks! I need some help with this exercise
    9·2 answers
  • A line contains the points (3, -4) and (0, 2). What is the equation of this line in slope-intercept form?
    6·1 answer
  • NEED HELP ASAP PLEASE
    5·2 answers
  • The student will recognize the characteristics of a composite number based on its factors.
    14·1 answer
  • Traslate the following<br> a less than 16
    6·1 answer
  • The population of a small town is currently 6000. This population grows at roughly 1.6% per year. In how many years will the pop
    6·1 answer
  • Solve for x plsssssss
    13·1 answer
  • Which are vertical angles to 4?
    12·1 answer
  • Please ASAP
    9·2 answers
  • I need help in this zzzzzzz
    12·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!