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
Lilit [14]
3 years ago
11

Solve each given equation and show your work. Tell whether each question has one solution, an infinite number of solutions, or n

o solutions. Explain your answers. (A) 2x+4(x-1)=2+4x. (B) 25-x=15-(3x+10) (C) 4x=2x+2x+5(x-x)
Mathematics
1 answer:
laiz [17]3 years ago
3 0
2x + 4(x - 1) = 2 + 4x
2x + 4x - 4 = 2 + 4x
6x - 4 = 2 + 4x
6x - 4x = 2 + 4
2x = 6
x = 3........there is 1 solution

25 - x = 15 - (3x + 10)
25 - x = 15 - 3x - 10
25 - x = -3x + 5
3x - x = 5 - 25
2x = - 20
x = -20/2
x = -10.....there is 1 solution

4x = 2x + 2x + 5(x - x)
4x = 4x + 5x - 5x
4x = 4x......this has infinite solutions

learn this...
if ur equation ends in a variable equaling a number, then there is one solution.
if ur equation ends in something not equal, like 2 = 4, or 4 = 6, then there is 0 solutions.
if ur equation ends in something equal to something,(the same) like 2 = 2, or 4x = 4x, then there is infinite solutions

You might be interested in
When 4 is added to three times of a number, the answer is the same as subtracting 2 from the number. What is the number ?
Orlov [11]

Answer:

- 3

Step-by-step explanation:

let n be the number , then

3n + 4 = n - 2 ( subtract n from both sides )

2n + 4 = - 2 ( subtract 4 from both sides )

2n = - 6 ( divide both sides by 2 )

n = - 3

The number is - 3

7 0
3 years ago
4/5 to 3/5 as a tenth of a percent
Rudik [331]
12/25 that will be the answer so its the percent time always helps.
5 0
3 years ago
Which statement about the system of equations is true?
vagabundo [1.1K]
8x + 6y = 10 ----------- (1)
5x - 3y = 2.2 ---------- (2)

(2) x 2:
10 x - 6y = 4.4 --------(2a)

(2a) + (1)
18x = 14.4
x = 1.8 ------- sub into (1)
8 (1.8) + 6y = 10
14.4 + 6y = 10
6y = 10 - 14.4
6y = - 4.4
y = - 0.73

There is 1 set of solution to it. (Answer C)


3 0
3 years ago
The following table shows a direct variation. 3 15 18 27 y 5 6 9 Find y. 0 1 2 3
saul85 [17]

Answer:

1 is the Answer

Step-by-step explanation:

the way the table is going is 3 x 5 is 15. 3 x 6 is 18 and 3 x 9 is 27. in order to get 3 on the table you need 1. it makes the most sense

8 0
3 years ago
Read 2 more answers
Which of the following is not a rational number?
Illusion [34]
D because a rational number can be converted into a fraction and the square root of 5 cannot be covert into a fraction because it equals 2.2
4 0
3 years ago
Other questions:
  • The ground temperature at sea level is 60 degrees F. For every 100-foot increase in elevation, the temperature rises 1/10 of one
    14·2 answers
  • The slope of (19,-16), (-7, -15)
    7·2 answers
  • Danny’s 7 friends contributed an equal amount of money to buy him a birthday present. The present cost $84. How much money do ea
    15·1 answer
  • A taxi charges $1.25 per mile and a flat fee of $2.75. How much would Maria pay for a 5 mile ride?
    15·1 answer
  • Need help please thank you
    6·1 answer
  • What is f(4) for the function f(x) = 7x +3? f(4) = ?​
    7·2 answers
  • Simplify the following expression.<br> X -2/3 . X 6/7
    12·1 answer
  • Need help!!
    7·1 answer
  • Solve the system using elimination? <br> 2x+3y=8<br> 5x+6y=17
    8·2 answers
  • Quick algebra 1 question for 50 points!
    14·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!