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
PolarNik [594]
3 years ago
6

A quadratic equation is shown below: 4x2 − 12x + 9 = 0

Mathematics
1 answer:
lys-0071 [83]3 years ago
6 0
A)

The discriminant (radicand) is √(b^2-4ac), let us call this "d" for the discriminant.

If:

d<0, there are no real solutions (though there are two imaginary ones)

d=0, there is one real solution

d>0, there are two real solutions.

In this case, d=12^2-4(4)9

d=144-144

d=0

So there is one real solution.

B)

9x^2-30x+25=0

9x^2-15x-15x+25=0

3x(3x-5)-5(3x-5)=0

(3x-5)(3x-5)=0

(3x-5)^2=0

x=5/3

x=1 2/3
You might be interested in
Please help 10 points
jok3333 [9.3K]

Answer:

5

Step-by-step explanation:

Let's first find the slope of the linear function represented by the table:

As we move from x = 4 to x = 6 *an increase of 2), y increases by 6 from -2 to +4.  Thus, the slope of this line is m = rise / run = m = 6/2, or 3.

Now we compare the two slopes:  -2 and 3.

The postive difference between them is 5.  This is Answer B.

3 0
3 years ago
Rebecca bought some snacks at the bulk food store. She scooped and
oee [108]

Answer:

1.85

Step-by-step explanation:

3 0
3 years ago
X 5.2.24-E Question Help Assume that when adults with smartphones are randomly selected, 54% use them in meetings or classes. If
musickatia [10]

Answer:

Step-by-step explanation:

la probabilidad es del 60%

4 0
3 years ago
Can someone help?<br> Its for a test
Elena L [17]

Answer:

6x = 58 - 1.6

x = 9.4

Step-by-step explanation

4 0
3 years ago
Read 2 more answers
I really need help please help me out!
creativ13 [48]
I should say b or c
7 0
3 years ago
Other questions:
  • Help out please thank you
    13·2 answers
  • A box contains 45 toys.What fraction of the toys remain if 35 are removed?
    15·1 answer
  • Evaluate d/2 + c/3 for c = 6 and d = 10 <br><br> a) 10<br> b) 16/5<br> c) 7<br> d) 6
    6·1 answer
  • The sum of three numbers is 87. The third number is 2 times the second. The first number is 7 more that the second. What are the
    9·1 answer
  • Jack ran 4 kilometers each day for 3 days. How many meters did jack run in 3 days?​
    12·2 answers
  • 2. AB and DE are parallel. Angle BAC = 30 , angle CDE = 50. What is the measure of angle ACD?
    6·2 answers
  • 8(2x+9)=56 I need some help with this I just don't get it
    5·2 answers
  • What's is 57 divided by 858 using partial quote
    8·1 answer
  • Select the correct answer.<br> What is the domain of the function shown on the graph?
    12·1 answer
  • What is the answer to 284 times 45 to the power of 3
    10·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!