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
jok3333 [9.3K]
2 years ago
7

Solve 5x^2 - 7x+2 -0 by completing the square. What are the solutions?

Mathematics
1 answer:
trapecia [35]2 years ago
6 0

5<em>x</em>² - 7<em>x</em> + 2 = 0

5(<em>x</em>² - 7/5 <em>x</em>) + 2 = 0

5(<em>x</em>² - 7/5 <em>x</em> + 49/100 - 49/100) + 2 = 0

5(<em>x</em>² - 2 • 7/10 <em>x</em> + (7/10)²) - 49/20 + 2 = 0

5(<em>x</em> - 7/10)² - 9/20 = 0

5(<em>x</em> - 7/10)² = 9/20

(<em>x</em> - 7/10)² = 9/100

<em>x</em> - 7/10 = ± √(9/100)

<em>x</em> - 7/10 = ± 3/10

<em>x</em> = 7/10 ± 3/10

<em>x</em> = 10/10 = 1   or   <em>x</em> = 4/10 = 2/5

You might be interested in
Plz help pretty easy
cricket20 [7]

a and d b and c that's the answer

4 0
3 years ago
Read 2 more answers
What does the expression n + 3
GuDViN [60]
It means the sum of a number and 3.
Sum means to add up.
6 0
3 years ago
A car rental agency advertised renting a car for $ 23.95 per day and $ 0.32 per mile. of david rents this car for 4 ​days, how m
Taya2010 [7]
325 miles total.
23.95x4 =95.8
200-95.80
=$104.20
104.20 divided by.32 is 325.6 so in total 325 miles.
7 0
3 years ago
What percent of 47.9 is 11?<br> A)4.4%<br> B)435.5%<br> C)148%<br> D)23%
Arte-miy333 [17]

Answer:

4.4%

Step-by-step explanation:

47.9 divided by 11 is 4.3545454545...

Round the 4.35454545.. to the closest

This is 4.4 percent

3 0
3 years ago
1 5/16 tons as a decimal
liubo4ka [24]
The answer is 1.3125
6 0
3 years ago
Other questions:
  • Can someone explain to me what rate of change is and how you figure it out.
    11·1 answer
  • The smith family bought a new tent for a camping tent
    12·2 answers
  • A small business earns a profit of 6500 in January and 17500 in may what is the rate of change in profit for this time period
    13·1 answer
  • Are 5.5 + 2.1x + 3.8x - 4.1 and 1.4 5.9x equivalent
    12·2 answers
  • If f(x) =2x+3 then the point (1,5) is on the graph of f true or false
    13·1 answer
  • 35 rounded to the nearest hundred
    7·2 answers
  • What is the answer I really need help
    6·1 answer
  • Use these true equations to help you answer the questions that follow.
    13·1 answer
  • Definition: The points where a graph intersects the x-axis are called it’s __.
    12·1 answer
  • Solve: 3 = 27^2x+1<br><br> please solve quickly! thank you!
    7·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!