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
Varvara68 [4.7K]
3 years ago
13

Estimate the solution to the system of equations 7x−y=7 x+2y=6 ​i need help

Mathematics
1 answer:
Yanka [14]3 years ago
7 0

Answer:

(4/3, 7/3)

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
  • Subtraction Property of Equality

<u>Algebra I</u>

  • Terms/Coefficients
  • Coordinates (x, y)
  • Solving systems of equations of using substitution/elimination

Step-by-step explanation:

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

7x - y = 7

x + 2y = 6

<u>Step 2: Rewrite Systems</u>

Equation: x + 2y = 6

  1. [Subtraction Property of Equality] Subtract 2y on both sides:                    x = 6 - 2y

<u>Step 3: Redefine Systems</u>

7x - y = 7

x = 6 - 2y

<u>Step 4: Solve for </u><em><u>y</u></em>

<em>Substitution</em>

  1. Substitute in <em>x</em>:                                                                                                7(6 - 2y) - y = 7
  2. Distribute 7:                                                                                                    42 - 14y - y = 7
  3. Combine like terms:                                                                                       42 - 15y = 7
  4. [Subtraction Property of Equality] Subtract 42 on both sides:                    -15y = -35
  5. [Division Property of Equality] Divide -15 on both sides:                             y = 7/3

<u>Step 5: Solve for </u><em><u>x</u></em>

  1. Define original equation:                                                                               x + 2y = 6
  2. Substitute in <em>y</em>:                                                                                                x + 2(7/3) = 6
  3. Multiply:                                                                                                           x + 14/3 = 6
  4. [Subtraction Property of Equality] Subtract 14/3 on both sides:                  x = 4/3
You might be interested in
Describe how you would write 5.04 X 10^6 in standard form.
Margarita [4]

You move the decimal point 6 places to the right because the exponent is positive.

5.04 x 10^6 in standard form is 5040000.

3 0
3 years ago
Read 2 more answers
Simplify the following boolean expression (A+B) (A+B)​
vichka [17]

♥️♥️♥️♥️♥️♥️♥️♥️♥️♥️♥️♥️♥️♥️

(A + B)(A + B) =

{A}^{2}  + 2AB +  {B}^{2}

♥️♥️♥️♥️♥️♥️♥️♥️♥️♥️♥️♥️♥️♥️

6 0
2 years ago
How is the graph of y=(x-1)2-3 transformed to produce the graph of y-3(x+4)??
Salsk061 [2.6K]

Step-by-step explanation:

How is the graph of y=(x-1)2-3 transformed to produce the graph of y-3(x+4)??

The graph is translated left 5 units, compressed vertically by a factor of 2, and translated up 3 units.

The graph is stretched vertically by a factor of Ź, translated left 5 units, and translated up 3 units.

O The graph is translated left 5 units, compressed horizontally by a factor of 3, and translated down 3 units.

O The graph is stretched horizontally by a factor of Ž, translated left 5 units, and translated down 3 units.

4 0
3 years ago
20 points
Fantom [35]

Answer:

The value 4.5 is rational and the value 15−−√ is irrational. The sum of 4.5 and 15−−√ has a non-repeating and non-terminating decimal expansion. Therefore, the sum of 4.5 and 15−−√ is irrational. I can't explan but that's the correct Answer

7 0
2 years ago
Andrew micheal anderson istg if u dont answer my s n a p-
Vera_Pavlovna [14]

Step-by-step explanation:

He won't answer you.

HAHAHAVSAHSSSBDJSIDNFKSNDODHSNDODDJ

3 0
2 years ago
Read 2 more answers
Other questions:
  • The radius of a circle is 9cm what is the length of its diameter?
    5·2 answers
  • I really need help on this please no clue
    11·1 answer
  • A rectangle has an area of 30 square centimeters. The length of the rectangle is 10 centimeters. What is the width of the rectan
    8·2 answers
  • OMG PLS HELP WITH THIS IM PANICKING OMG I GOT A F IN MATH MY MOM JUST YELLED AT ME IM CRYING PLS HELP WITH THS- PLSS TELL ME WHA
    5·1 answer
  • If f(x) = 2x² then when x = 3, y will equal
    14·1 answer
  • Track coach records the number of miles that he ran per day over the month. The stem-and-leaf plot below summarizes this data.
    9·2 answers
  • (-7,-8),(-6,7) Distance formula
    9·1 answer
  • A (I cant say it on here for some reason )water fish tank requires a certain salinity. To reach this requirement, the relationsh
    11·1 answer
  • Does anyone know this (-13w^2+13)-(-2w^2)<br> Plato answer
    9·1 answer
  • The length of one leg of an isosceles right triangle is 3 ft. What is the perimeter of the triangle?
    12·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!