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
vichka [17]
2 years ago
13

What does X equal in the equation 8(4-x) =7x +2

Mathematics
2 answers:
Bess [88]2 years ago
6 0

Answer:

<h2>x = 2</h2>

Step-by-step explanation:

8(4-x)=7x+2\qquad\text{use the distributive property}\ a(b+c)=ab+ac\\\\(8)(4)+(8)(-x)=7x+2\\\\32-8x=7x+2\qquad\text{subtract 32 from both sides}\\\\32-32-8x=7x+2-32\\\\-8x=7x-30\qquad\texy{subtract}\ 7x\ \text{from both sides}\\\\-8x-7x=7x-7x-30\\\\-15x=-30\qquad\text{divide both sides by (-15)}\\\\\dfrac{-15x}{-15}=\dfrac{-30}{-15}\\\\x=2

drek231 [11]2 years ago
4 0

Answer:

x = 2

Step-by-step explanation:

Given

8(4 - x) = 7x + 2 ← distribute parenthesis on left side

32 - 8x = 7x + 2 ( subtract 7x from both sides )

32 - 15x = 2 ( subtract 32 from both sides )

- 15x = - 30 ( divide both sides by - 15 )

x = 2

You might be interested in
Gloria has 2 5/8 ounces of perfume. if she uses one third of it, how much will she have left?
BARSIC [14]
If the answer can be left in a fraction than this is the solution: 2×5/8=5/4
5/4-1/3=11/12
if you mean the answer must be left in a whole number than.. I don't really know how to do it
4 0
2 years ago
How many more unit tiles must be added to the function f(x)=x2−6x+1 in order to complete the square?
Valentin [98]
<h2>8 unit tiles should be added</h2>

Step-by-step explanation:

       Function given is f(x)=x^{2}-6x+1. We wish to add more unit tiles to the function so that it becomes a complete square.

       Since the given function is of order 2, the side of the square will be order 1. Let us assume a general order 1 expression ax+b to be the side of the square.

       As the function forms the square after adding some p unit tiles, f(x)+p=(\text{Side of square})^{2}

x^{2}-6x+1+p=(ax+b)^{2}=a^{2}x^{2} +2abx+b^{2}

From comparision, a^{2}=1; 2ab=-6; b^{2}=1+p\\a=1; b=-3\\(-3)^{2}=p+1\\p=8

∴ 8 more unit tiles are required to complete the square.

10 0
2 years ago
Read 2 more answers
write an expresion that shows how you can multiply 9x475 using expanded form and the distributive property.
SSSSS [86.1K]
(400 x 9) + (70 x 9) + (9 x 5)
5 0
3 years ago
you and your sister have a combined age of 63 years your sister is 7 more than double your age. what are each of your ages
grin007 [14]

Answer:

your sister is 43 and your are 18

Step-by-step explanation:

8 0
3 years ago
The independent variable x varies directly as the dependent variable y.
scoray [572]

Answer:

2

Step-by-step explanation:

the constant does change

8 0
3 years ago
Other questions:
  • Would is the area of a triangle
    15·1 answer
  • Graph y = 3x - 3 and label the x- and y-intercepts. My answer: (0,3)
    8·1 answer
  • Give your opinion about young generation! with the right structure.
    12·1 answer
  • What is the answer too 11 - 18s = - 15?
    9·1 answer
  • Classify each as an expression or an equation.
    5·1 answer
  • Audrey Lorenz assembles gift baskets for a florist. The owner pays her $0.45 per small basket and $0.75 per large basket on Tues
    14·1 answer
  • Danielle stayed in three different cities (Washington, D.C., Atlanta, Georgia, and Dallas, Texas) for a total of 22 nights. She
    5·1 answer
  • Lexi mailed a letter on Monday morning. The letter traveled 1/2 of a mile on Monday. It
    5·2 answers
  • As a town gets smaller, the population of its high school decreases by 8% each year. The senior class has 320 students now. In h
    14·1 answer
  • Please help me
    6·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!