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
aksik [14]
3 years ago
12

6. Solve the system using substitution.

Mathematics
2 answers:
vampirchik [111]3 years ago
7 0
4x=(-3x)+18
7x=18
x≈2.5

4(2.5)=3y-2
10=3y-2
12=3y
y=4

your answer is B.(2.5,4)



irina [24]3 years ago
4 0

Answer:

The answer is the option A

(4,6)

Step-by-step explanation:

we have

4x=3y-2 -----> equation A

18=3x+y ----> isolate the variable y

y=-3x+18 -----> equation B

Substitute the equation B in the equation A

4x=3(-3x+18)-2

4x=-9x+54-2

4x+9x=52

13x=52

x=4

substitute the value of x in the equation B

y=-3(4)+18=6

therefore

the solution is the point (4,6)

You might be interested in
You randomly guess the answers to two questions on a multiple-choice test. Each question has three choices: A, B, and C. What is
Maksim231197 [3]
The probabilityof answering one question correctly is 1/3. To do this two times, the probability is 1/3*1/3 = 1/9 ≈ 11%
3 0
4 years ago
What is 3x-1<-25 solve
yan [13]

Answer:

x < -8

Step-by-step explanation:

To solve this inequality you would need to isolate the variable x.

Add 1 to both sides of the inequality.

  • 3x < -24

Divide both sides of the inequality by 3.

  • x < -8
8 0
3 years ago
Need help with the composition of functions. I have attached a screenshot of the question.
Salsk061 [2.6K]

Answer:

(f∘f)(x) = x⁴ -12x² +30

(g∘g)(x) = x/9

Step-by-step explanation:

a) (f∘f)(x) = f(f(x)) = f(x² -6)

... = (x² -6)² -6

... = x⁴ -12x² +36 -6

... (f∘f)(x) = x⁴ -12x² +30

b) (g∘g)(x) = g(g(x)) = g(x/3)

... = (x/3)/3

... (g∘g)(x) = x/9

7 0
3 years ago
A cable runs from the top of a pole to a spot on the ground 10 feet from the base of the pole. The pole makes a right angle with
Amanda [17]
Use the cos ratio to figure this out. You have the length of the hypotenuse and the length of the leg on the ground. The hypotenuse is 20 and the leg is 10. The cos ratio says that cosA = side adjacent/hypotenuse. So fill in the blanks here: cosA = 10/20...cosA=1/2. In your calculator, you will enter inverse cos(.5) to find that the angle in question is 60 degrees. To find the inverse function on your calculator, press the "2nd" button and the "cos" then in the (), enter ".5".
7 0
3 years ago
Marcus has created a budget for his upcoming trip to the theme park. Admission is 40% of the budget. He plans to spend 32% of hi
Sergio [31]
32 Marcus has created a budget for his upcoming trip to the theme park. Admission is 40% of the budget. He plans to spend 32% of his money on food, 23% on
5 0
3 years ago
Other questions:
  • 8x - 4y - 3x - 7y<br><br> Help me please !
    9·2 answers
  • The two non-parallel sides of an isosceles trapezoid are each 7 feet long. The longer of the two bases measures 22 feet long. Th
    14·1 answer
  • jenny is painting a toy chest that she made for her little brother. if the box is 4 feet long, 3 feet wide, and 2 feel tall, wha
    15·1 answer
  • What is the slope of the line below?
    12·1 answer
  • 4. Let's say you flip two colns, roll a six-sided die, and pick a random card out of a standard deck of cards. What is the proba
    13·2 answers
  • Can some answer pls.
    9·2 answers
  • The tenth term of a linear sequence 18. The term to term rule is subtract 4.work out the Fourth term of the sequence.​
    6·1 answer
  • Simplify.<br> 12 + 15 + 3 x 6 - 4
    14·2 answers
  • I’ll mark the brainiest
    5·1 answer
  • Donna bought a notebook for $3.50 and then spent half of her money for a textbook. Next she bought sheet music for $4.00 and the
    11·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!