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
In what ways can vertical, horizontal, and oblique asymptotes be identified
Wittaler [7]
They are all alike because they are all angles 
8 0
3 years ago
Reggie has $36.40 in nickels and $36.40 in dimes. What is the ratio of the number of nickels to the number of dimes that Reggie
Dmitry [639]

D 2:1, because a dime is worth twice as much as a nickel

Because the question has number of nickels listed first in the ratio that makes the answer 2:1 as opposed to B 1:2. Also, two nickels equal the same amount as one dime so for every two nickels there is one dime. In this case, there are 728 nickels and 364 dimes. 728/364 = 2/1 (simplifies down to the fourth ratio given)

6 0
3 years ago
What is the reciprocal of 2 4/5 ?​
marin [14]

Answer:

5/14

Step-by-step explanation:

6 0
2 years ago
Read 2 more answers
Which graph represents the compound inequality?
ad-work [718]

Step-by-step explanation:

The graph of-5 to positive 2.

6 0
3 years ago
Read 2 more answers
12, 14, 16, 18
Igoryamba

Answer:

next term is 20

Step-by-step explanation:

by using the nth term rule 2n+10

3 0
3 years ago
Read 2 more answers
Other questions:
  • Joe is researching the cost of going to college. He sees the table shown.
    10·2 answers
  • Factor completely. 25w² + 60w + 36 Express the answer in the form (aw+b)2 . Enter your answer in the box.
    7·2 answers
  • The area (A) of a circle with a radius of r is given by the formula A=3.14r^2 and its diameter (d) is given by d=2r. Arrange the
    5·1 answer
  • 1.98 x 0.5 + 8<br> 7<br> How do I write the number in word form?
    5·1 answer
  • The weights of newborn baby boys born at a local hospital are believed to have a normal distribution with a mean weight of 3571
    7·1 answer
  • What is the annual share of the profit awarded to the owner of a share of stock called?
    12·1 answer
  • URGENT!! Please help if you can!!
    9·2 answers
  • Factored form for x^2 + 8x + 3​
    13·2 answers
  • in an 7th grade class with 80 people, seven tenths of the students wore shorts, if three sevenths of those students who wore sho
    13·2 answers
  • Complete the equation of the line through (3,-1)(3,−1)left parenthesis, 3, comma, minus, 1, right parenthesis and (4,7)(4,7)left
    7·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!