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
lukranit [14]
3 years ago
10

Compute the value of the discriminant and give the number of real solutions to the quadratic equation:

Mathematics
2 answers:
Naddika [18.5K]3 years ago
5 0
3x^2 - 7x + 9 = 0 \\ \\a=3, \ \ b=-7, \ \ c= 9 \\ \\ \Delta =b^2-4ac = 7^2 -4\cdot 3 \cdot 9 = 49-108= -59 \\ \\ If \ \Delta


dexar [7]3 years ago
3 0
ax^2+bx+c=0\\
3x^2-7x+9=0
a=3 b=-7 c=9
\Delta=b^2-4ac=(-7)^2-4*3*9=49-108=-59
\Delta
If the delta is less than zero and if no polynomial real roots
You might be interested in
Five more than twice a number is -13 into a two step equation
Sav [38]

Answer:

2n + 5

Step-by-step explanation:

You are adding 5 to the multiplication of 2 and a number.

5 0
3 years ago
Write each decimal using a negative exponent.
leonid [27]

Answer:

The answer to your question is below

Step-by-step explanation:

When using scientific notation,

- when we move the decimal point to the right, the power will be negative.

- when we move the decimal point to the left, the power will be positive.

a) 0.00001    move the decimal point 5 places to the right   1 x 10⁻⁵

b) 0.001         move the decimal point 3 places to the right   1 x 10⁻³

8 0
3 years ago
Read 2 more answers
In AKLM, m = 1.2 cm, k = 5.1 cm and
Elodia [21]

Answer:

  4.2 cm

Step-by-step explanation:

The law of cosines is applicable.

  l² = k² +m² -2km·cos(L)

  l² = 5.1² +1.2² -2·5.1·1.2·cos(35°) ≈ 17.4236

  l ≈ √17.4236

  l ≈ 4.2 . . . cm

4 0
3 years ago
5a + 12d - 19a -11d -a
horsena [70]

Answer:

-15a+d

Step-by-step explanation:

5a-20a+12d-11d

-15a+d

3 0
3 years ago
Read 2 more answers
Two ladders AB and PQ are resting against opposite
muminat

Answer:

The length of the longer ladder is 35 ft Step-by-step explanation: Please check the attachment for a diagrammatic representation of the problem We want to calculate the length of the longer ladder ; We make reference to the diagram Since the two right triangles formed are similar. the ratios of their sides are equal; Thus; 20/15 = 28/x + 15 20(x + 15) = 15(28) 20x + 300 = 420 20x = 420-300 20x = 120 x = 120/20 x = 6 So we want to calculate the hypotenuse of a right triangle with other sides 28ft and 21 ft To do this, we use the Pythagoras’ theorem which states that square of the hypotenuse equals the sum of the squares of the two other sides Let the hypotenuse be marked x x^2 = 28^2 + 21^2 x^2 = 1,225

x = √1225

x = 35 ft

5 0
2 years ago
Other questions:
  • the length of lisa's rectangular dining room is 12 feet. if the area of the room is at least 96 square feet, what is the smalles
    7·2 answers
  • Please help with this
    11·1 answer
  • Simonne used the following steps to simplify the given expression. 12 - 3(-2x + 4)
    10·2 answers
  • The number 0.9 is a(n) __________ number.
    13·1 answer
  • Please help with this quick! Your answer will be appreciated or be given a thanks and a 5 star! If 2 people answer and yours mak
    14·1 answer
  • Trevor’s science class is studying rainfall on the first day of every month for one year. Explain why this would not represent t
    5·2 answers
  • 7-3 Multiplying Binomials
    14·1 answer
  • Which polynomial is a quintic binomial?
    6·1 answer
  • Find the vertex of this parabola:<br> y = -x2 + 6x – 15
    13·2 answers
  • A point in quadrant iii is reflected across the y-axis. what is true about the new location? check all that apply.
    12·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!