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
GaryK [48]
3 years ago
12

Solve the equation for y (y-3)^2=4y-12

Mathematics
1 answer:
Ket [755]3 years ago
8 0
(y -3)^2 = 4y - 12

Expand.

(y-3)(y -3) = 4y - 12

y² - 6y + 9 = 4y - 12

y² - 6y -4y + 9 + 12 = 0

y² - 10y + 21 = 0

Factors are -7y and - 3y

y² - 10y + 21 = 0

y² - 3y - 7y + 21 = 0

y(y - 3) -7(y - 3) = 0

(y - 3)(y - 7) = 0

y-3 = 0   or    y - 7 = 0

y = 0 + 3  or  y = 0 + 7

y = 3 or 7
You might be interested in
John buys a computer with a 20% discount. If he paid $760 for the computer, how much was the discount?
Mumz [18]
If there was 20% taken off you add 20% back on and that is how you will get your answer. So take 760 plus the 20% which gives you 912 dollars
8 0
4 years ago
Read 2 more answers
Solve using the substitution method.<br><br><br><br> x + 2y = 9<br><br> x + 3y = 13
Rasek [7]

x + 2y = 9

x + 3y = 13

____________________________________________________________

Solve for x in the first equation. Subtract 2y from both sides.

x = 9 - 2y

____________________________________________________________

Plug x into the second equation.

(9 - 2y) + 3y = 13

Combine like terms.

9 + y = 13

Subtract 9 from both sides.

y = 4

____________________________________________________________

Plug y back into the first equation.

x + 2(4) = 9

x + 8 = 9

Subtract 8 from both sides.

x = 1

____________________________________________________________

x = 1

y = 4

6 0
3 years ago
Triangle ABC is similar to triangle FGH.<br><br> What is the value of x in centimeters?
garri49 [273]

Answer:

pythagorean theorem

18

Step-by-step explanation:

3 0
3 years ago
Ayana's chemistry class is exploring how the weight and volume of everyday objects are related. For her first experiment, Ayana
marysya [2.9K]

Answer:  In the custom setting, choose the ‘My Object’ option in the material drop down box.  Set the mass of your object to 4 kg.  Adjust the volume to find the minimum volume needed to make the object float.

   Volume________4.09_L________                Density__________.98 kg/L________

      2.      How does the density of a large piece of aluminum compare to a small piece?

Step-by-step explanation:

8 0
3 years ago
Which points are on the graph of k(x)=(1/4)^x ?
Likurg_2 [28]
(-1,4) and (3 1/64)
I took the test like 5 minutes ago.
I hope this helps!
7 0
3 years ago
Read 2 more answers
Other questions:
  • -12x=-10 can give Brainly
    11·2 answers
  • HELP PLZ
    14·1 answer
  • Kim and Leon exercise a total of 20 hours each week. Leon exercises 2 hours less than 3 times the number of hours Kim exersices.
    9·1 answer
  • Drew exercises every eight days and sara every 12 days. drew and sara both exercised today. how many days will it be until they
    6·1 answer
  • Find the exact value of tan (arcsin (2/5)).
    6·1 answer
  • Simplify (6x^-2)^2(0.5x)^4 show work please
    9·2 answers
  • PLEASE HELP !!!
    13·1 answer
  • Rory's battery was full at 6:00 a.M, or t = 0. Which times could Rory's phone have been plugged into the charger? Select three o
    7·1 answer
  • I need help on this please
    13·2 answers
  • Which of the following is true about similar right triangles ?
    11·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!