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
Umnica [9.8K]
3 years ago
14

У = 2х +7 y = x+8 using substitution

Mathematics
2 answers:
Mkey [24]3 years ago
5 0

Answer:

(1, 9)

General Formulas and Concepts:

<u>Pre-Algebra</u>

Order of Operations: BPEMDAS

  1. Brackets
  2. Parenthesis
  3. Exponents
  4. Multiplication
  5. Division
  6. Addition
  7. Subtraction
  • Left to Right

Equality Properties

  • Multiplication Property of Equality
  • Division Property of Equality
  • Addition Property of Equality
  • Subtract Property of Equality

Step-by-step explanation:

<u>Step 1: Define Systems</u>

y = 2x + 7

y = x + 8

<u>Step 2: Solve for </u><em><u>x</u></em>

<em>Substitution</em>

  1. Substitute in <em>y</em>:                         2x + 7 = x + 8
  2. Subtract <em>x</em> on both sides:        x + 7 = 8
  3. Subtract 7 on both sides:        x = 1

<u>Step 3: Solve for </u><em><u>y</u></em>

  1. Define equation:                     y = x + 8
  2. Substitute in <em>x</em>:                        y = 1 + 8
  3. Add:                                         y = 9
Delvig [45]3 years ago
3 0

Answer:

x = 1

y = 9

Step-by-step explanation:

y = 2x + 7 --------------------(I)

y = x + 8 ----------------------(II)

Substitute y = 2x + 7 in equation (I)

    2x + 7 = x + 8           {Subtract 'x' from both sides}

2x + 7 - x = 8                 {Combine like terms}

      x + 7 = 8                  {Subtract 7 from both sides}

           x  = 8 -7

x = 1

Substitute x = 1 in equation (I)

y = 2*1 + 7

 = 2 + 7

y = 9

You might be interested in
Find the value of:<br> a) x2 when x = 6
Snowcat [4.5K]

If x = 6 then, x^2 \\ (6)^2 \\ 6 \times 6 \\ 36.

36

6 0
3 years ago
Read 2 more answers
Complete the equation so it has infinitely many solutions.
ANEK [815]

Answer:

2)27

Step-by-step explanation:

18+3(3+5x)=15x+____

18+9+15x is still the same as 15x+____

so 27+15x is =15x+27

hope I helped mark as brainliest answer

7 0
2 years ago
What is the vertex? <br> What is the domain? <br> What is the range
kati45 [8]

domain-x intercept

range-y intercept

3 0
2 years ago
Please answer tomorrow is my exam please​
Illusion [34]

Answer:

i dont know sorry.

Step-by-step explanation:

Do it yourself ;)

4 0
2 years ago
How many solutions will there be to the following equation?
Akimi4 [234]

Answer:

C. 1 solution

Step-by-step explanation:

I calculated logically

7 0
2 years ago
Other questions:
  • A triangle has sides 12 2/3 inches, 10 1/3 inches, and 5 1/3 inches. What is the perimeter (distance around the edges) of the tr
    11·1 answer
  • Can you solve r=4+7x-sx for x
    15·1 answer
  • Brittany is making hair bows to sell at a craft show. Each hair bow requires 34 yard of ribbon. Brittany plans to make 50 bows.
    12·2 answers
  • Need Answer ASAP
    15·2 answers
  • Seamstress Jane has purchased 50 yards of red fabric and 110 yards of gold fabric to make red and gold curtains. What is the lar
    15·1 answer
  • Problems 7-15 Simplify each expression. 20 points
    8·1 answer
  • Someone help me pls ill give brainlist to the correct one
    11·1 answer
  • vinnie hacker shouldn't have followers at all and he doesn't appreciate what his followers do for him if it weren't for us he wo
    13·2 answers
  • Helppp me pleaseeeeeee
    12·1 answer
  • HELP PLEEEEEEEEEEASE ITS THE LAST QUESTION ON MY TEST ILL DO ANYTHING
    10·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!