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
Westkost [7]
3 years ago
8

Solve absolute value equation. Check for extraneous solution. |2x-3|=2x-1. Post it into the drop box for the unit 2 review.

Mathematics
1 answer:
polet [3.4K]3 years ago
6 0

let's keep in mind that, an absolute value expression is in effect a piecewise one, since it has a ± versions of it.


\bf |2x-3|=2x-1\implies \begin{cases}+(2x-3)=2x-1\\-(2x-3)=2x-1\end{cases}\\\\[-0.35em]~\dotfill\\\\+(2x-3)=2x-1\implies 2x-3=2x-1\implies -3 \ne -1\impliedby extraneous\\\\[-0.35em]~\dotfill\\\\-(2x-3)=2x-1\implies 2x-3=-2x+1\implies 4x=4\\\\\\x=\cfrac{4}{4}\implies x=1

You might be interested in
Need help fastttt anybody
Gemiola [76]

Answer:

ok look, you gonna learn somethin ight

Step-by-step explanation:

If you want answer you usually wanna put at least 15 or more points invested after grinding points its more worth and more people will go for it instead of 5 points just saying it happened to me to i did a 5 points thing and no-one answered then, I did 50 and I got like 5 people saying NOO I WANTED TO ANSWER so yeah no hate but I'm just saying you can report if you think is mean which I already know is rude to most people and idc really. wasnt copied from e

6 0
3 years ago
How many dollars per hour greater is the hourly rate for Company G than Company H?
Korvikt [17]

Answer:

3

Step-by-step explanation:

company g is charging 10 per  hour and in the graph when it is zero hours it shows the base charge which is 25 but in addition when you add an hour if you subtract that amount minus the flat amount 25 you will get 7 and will continue to do so as you continue across the graph 10-7 equals 3

4 0
3 years ago
consider the followin polynomials equations a=3x2(x-1) b= -3x3+4x2-2x+1 . perform each operation and determine if the result is
Sedaia [141]

Answer:

All three operations lead to polynomials.

See explanations below.

Step-by-step explanation:

Polynomial a = 3x^2(x-1)=3x^3-3x^2

Polynomial b = -3x^3+4x^2-2x+1

Therefore:

a + b = 3x^3-3x^2+(-3x^3+4x^2-2x+1)=\\=3x^3-3x^2-3x^3+4x^2-2x+1=\\=x^2-2x+1

where we have combined all like terms. This is clearly another polynomial (of grade 2)

a - b (here we need to flip all signs inside the parenthesis when we remove this grouping symbol):3x^3-3x^2-(-3x^3+4x^2-2x+1)=\\3x^3-3x^2+3x^3-4x^2+2x-1=\\6x^3-7x^2+2x-1

which is clearly another polynomial (but of grade 3)

a * b : (here we use distributive property to multiply each term of the first polynomial by each term of the second one, and then combine like terms)

(3x^3-3x^2)*(-3x^3+4x^2-2x+1)=\\-9x^6+12x^5-6x^4+3x^3+9x^5-12x^4+6x^3-3x^2=\\-9x^6+21x^5-18x^4+9x^3-3x^2 which is indeed another polynomial (this time of grade 6)

5 0
4 years ago
Help me please ❤❤❤❤
STALIN [3.7K]
Its scribbled up together i can't read it
4 0
3 years ago
A worker uses exactly 4 screws and 7
m_a_m_a [10]

Answer:

well i dont know the options and is there a picture? but some advice is to see how many holes there are and that can help you find the answer

Step-by-step explanation:

Tell me if there is a picture or something else so i can help further :)

4 0
3 years ago
Other questions:
  • Complete to form equivalent fraction for #4
    15·1 answer
  • Cam returned 8 bottles worth 5 cent each and 5 bottles worth 10 cent each. How much money did he get?
    5·1 answer
  • I need help with 3 math questions. Here they are: A study of 50 high school students showed that exactly 25 of them took Biology
    9·1 answer
  • PROBLEM SOLVING Scientists conducted aerial surveys of a seal sanctuary and recorded the number x of seals they observed during
    13·1 answer
  • a rectangle has a length of 7 meters longer than double the width. the perimeter is 134 meters. find the dimensions of the recta
    5·1 answer
  • Tate and Black cut a pizza into 8 equal slices. Tate eats 3 slices and Black eats 4 slices. Write a fraction to represent the am
    15·1 answer
  • Which is the sum of 3.15 × 107 + 9.3 × 106? Write your answer in scientific notation.
    13·1 answer
  • 1/2+2/3 divided by 1/6
    13·2 answers
  • Based on the experimental results, how many rolls of 2 would you expect to get in a new experiment with 75 trials
    15·2 answers
  • How do you determine a function if a relation is a function <br>​
    8·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!