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
anastassius [24]
3 years ago
11

Solve the following equation by transforming it into a perfect square trinomial.* 3x2 + 12x = 63

Mathematics
1 answer:
Eddi Din [679]3 years ago
6 0
3x^2 + 12x = 63\\ \\3x^2+12x-63=0\\ \\3(x^2+4x-21)=0\\ \\3[x^2+4x+3x-3x-21] =0 \\ \\3[x^2+7x-3x-21] =0 \\ \\3[x(x +7 )-3(x+7)] =0

3 (x +7 ) (x-3) =0 \\ \\x+7=0 \ \ \ or \ \ \ x-3 =0\\ \\x=-7 \ \ \ or \ \ \ x=3
 

You might be interested in
A polygon with 12 sides is called a/an <br> a. dodecagon. <br> b. pentagon. <br> c. undecagon.
Pepsi [2]
The answer is A. dodecagon.
5 0
3 years ago
Read 2 more answers
Find the ratio. Sam ran 3520 feet in 20 minutes.
Rufina [12.5K]
3520:20 should be correct
8 0
3 years ago
Read 2 more answers
What is the equation of the line that passes through (-5,6) and (3,-10)??
Tanzania [10]
The equation is -2x-4. u can use y2-y1/x2-x1.
7 0
3 years ago
Can you answer question 29, please?
timurjin [86]
From the table, for every 6 containers of water, you need 8 containers of red dye. So, for every one container of red dye you need 0.75 containers of water (6/8). Then, multiply that by 100 (since you wanted to know water necessary for 100 containers of red dye). For 100 containers of red dye, you would need 75 containers of water. 
5 0
3 years ago
A stray dog ate 25 of your muffins that was 5/6 of all of them with how many did you start?
Maru [420]

Answer:

30 = total muffins

Step-by-step explanation:

To determine how many muffins were eaten, we take the total muffins times the fraction that were eaten

eaten muffins = total muffins * fraction

25 = total muffins* 5/6

Multiply each side by 6/5

6/5*25 = total muffins *5/6*6/5

30 = total muffins

3 0
3 years ago
Other questions:
  • A satellite dish shaped like a paraboloid, has diameter 2.4 ft and depth 0.9 ft. If the receiver is placed at the focus, how far
    13·1 answer
  • Can anyone help me making sure if my answers is right. Thanks
    7·1 answer
  • how many of the first ten positive whole numbers can be expressed as the sum of two different prime numbers?
    6·1 answer
  • What is the answer to this 8⁄10 – 1⁄5
    11·1 answer
  • 5189292910+129289391
    5·1 answer
  • Let f(x)=x-2 and g(x)=x2-7x-9 fins f(g(-1))
    13·1 answer
  • Find the constant of variation k for the direct variation.<br><br> 2x + 6y = 0
    12·1 answer
  • Hiiii pls help i’ll give brainliest if you give me a correct answer ty!
    7·1 answer
  • Find the focus and directrix of the parabola with the equation x² = -22y.
    6·1 answer
  • 112 is the product of 7 and Raj’s score.
    7·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!