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
pashok25 [27]
3 years ago
11

Х+у= 20 3х – 3 = 30 Which of x and y satisfy this system of equations?

Mathematics
1 answer:
butalik [34]3 years ago
8 0

Answer:

x = 11, y = 9

Step-by-step explanation:

Given the 2 equations

x + y = 20 → (1)

3x - 3 = 30 → (2)

In (2) add 3 to both sides

3x = 33 ( divide both sides by 3 )

x = 11

Substitute x = 11 into (1)

11 + y = 20 ( subtract 11 from both sides )

y = 9

You might be interested in
An isosceles triangle has an angle that measures 92° which other angles could be in that isosceles triangle choose all that appl
nignag [31]

Answer:

44

Step-by-step explanation:

The two base angles cannot both be 92 degrees because they would add up to 184 which is more degrees than any triangle has. The apex angle (the top angle) therefore has 92 degrees.

The base angles are equal and found as follows.

2*b + 92 = 180                 Subtract 92 from both sides

2b +92-92 = 180-92

2b = 88                           divide by 2

2b/2=88/2

b = 44

The only angle measurement that fits is 44

6 0
3 years ago
Find each value if f(x) = 2x - 1 and g(x) = 2 - x2.
bixtya [17]
Well i don’t know i just need me pints but sorry i’m so sorry
3 0
3 years ago
Using the Completing the Square method, what are the zeros of the quadratic function f(x) = 2x2 + 8x - 3?
Ipatiy [6.2K]

Answer:

A.

Step-by-step explanation:

1) to rewrite the given equation:

f(x)=2(x²+4x)-3; ⇔ f(x)=2(x²+4x+4)-3-8; ⇔ f(x)=2(x²+4x+4)-11; ⇔ f(x)=2(x+2)²-11;

2) the roots are:

\left[\begin{array}{ccc}x=-\sqrt{\frac{11}{2}}-2 \\x=\sqrt{\frac{11}{2}}-2 \end{array}

3) finally, the correct answer is A.

4 0
1 year ago
kyle took at total of 8 quizzes in the first 4 weeks of school. How many weeks of school will he have to attend before he will h
Elden [556K]

Answer:

6 weeks

Step-by-step explanation:

8 quizzes = 4 weeks

So 2 quizzes/week

It will take her 12/2 weeks (6) to finish 12 quizzes

-Chetan K

6 0
2 years ago
Please can someone explain and help me I am giving away 14 points the question is in the image
Tems11 [23]

Answer:

The area is 67.36 cm squared

Step-by-step explanation:

The height is 8.982. The base is 15. 8.982 * 15 = 134.73 / 2 = 67.36

5 0
2 years ago
Other questions:
  • Factor both quadratic expressions. (x 4 + 5x 2 - 36)(2x 2 + 9x - 5) = 0
    5·1 answer
  • In the diagram,
    13·1 answer
  • Jake went on a road trip with his family this summer. On Monday, they drove 629 miles. Tuesday, they drove 215 miles. On Wednesd
    14·2 answers
  • The top of a mountain is 2,450 feet above sea level a shipwreck was discover 310 feet below sea level what is the distance betwe
    5·1 answer
  • Please help me on this math question
    5·1 answer
  • A polygon that has all angles the sane is said to be
    5·1 answer
  • A farmer is able to get 45.5 gallons of milk from his cow each week. How many gallons can he get per day?
    13·1 answer
  • Graph the inequality -2x > 4
    13·1 answer
  • I need help with 5 pleade
    5·1 answer
  • 868 ÷ 14 = ?? i need help lol
    10·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!