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
Stella [2.4K]
3 years ago
11

What's the quadratic equation?

Mathematics
2 answers:
erma4kov [3.2K]3 years ago
6 0
The standard form of the quadratic equation is ax^2 + bx + c. In vertex form, it's y = a(x – h)2 + k. 
The graph of a quadratic equation is a parabola, which looks like a u. If <em>a</em> is negative then it's an upside down u.
o-na [289]3 years ago
4 0

in 8th grade my algebra teacher made us memorize the quadratic equation song (to the rhythm of pop goes the weasel):

x equals negative b plus or minus the square root of b squared minus 4ac all over 2a

You might be interested in
How do I graph y greater than equal to 5
Hatshy [7]
On your graph, draw a horizontal line at y=5. Basically a line over (-3,5) to (3,5) or whatever the greatest x's are. Since it is greater than or equal to, it is a solid line. Greater than, you shade above the line
7 0
3 years ago
Find the value of x in a triangle . If the hypotenuse of the triangle is 10 , the opposite is x+2 and the adjacent is x.​
Sauron [17]

Answer:

x = 6

Step-by-step explanation:

using Pythagoras' identity in the right triangle.

the square on the hypotenuse is equal to the sum of the squares on the other 2 sides , that is

x² + (x + 2)² = 10² ← expand parenthesis on left side and simplify

x² + x² + 4x + 4 = 100 ( subtract 100 from both sides )

2x² + 4x - 96 = 0 ( divide through by 2 )

x² + 2x - 48 = 0

(x + 8)(x - 6) = 0 ← in factored form

equate each factor to zero and solve for x

x + 8 = 0 ⇒ x = - 8

x - 6 = 0 ⇒ x = 6

however, x > 0 , then x = 6

8 0
1 year ago
I will give you Brainliest and 500 points if you do this please
aleksley [76]

Answer:

1. C

2. D

Step-by-step explanation:

1.

Pattern A is adding by 2's (1 -> 3, 4 -> 6, 7 -> 9 and so on).

Pattern B is multiplying by 2's (2 -> 4, 3 -> 6, 4 -> 8 and so on).

2.

If 0.25 gallons of paint = 24 ft^2, then 1 gallon will equal?

Set up an equation:

Variable x = area of ft^2 for 1 gallon of paint

0.25/24 = 1/x

Cross multiply

0.25 × x = 24 × 1

0.25x = 24

To make calculations easier, you can convert the decimal into a fraction: 0.25 = 1/4

1/4x = 24

Multiply both sides by 4

1x = 96

x = 96 ft^2

Check your work:

0.25/24 = 1/96

0.25 × 96 = 24 × 1

24 = 24

Correct

6 0
3 years ago
What is the discriminant of the equation 2x^2-4x+1=0
Yanka [14]

Answer:

8 i think

Step-by-step explanation:

7 0
2 years ago
Read 2 more answers
What two numbers added get you 25 but multiplyed gets you 8
LuckyWell [14K]
Well, you could have 2 numbers to get  25 but it is impossible to get 8 unless you divided by a random number
4 0
3 years ago
Other questions:
  • you can spend at most $20 on tomatoes and red peppers for a soup. tomatoes cost $2.50 per pound and red peppers cost $4 per poun
    12·1 answer
  • Describe the error in the work shown
    8·1 answer
  • Write the value of the digit 9 on 913,256
    10·2 answers
  • Determine the percentage change if the price of an item goes from 2.25 to 1.80
    12·1 answer
  • 256 oz = How many lb
    14·2 answers
  • Please help me solve this question. Thank you​
    6·1 answer
  • An estimated measurement was guessed of 10.4 mL and the actual measurement was 9.7 mL. What is the percent error?
    11·2 answers
  • 99-7a^2 when a =3 please help!!!!!!!!!
    9·1 answer
  • Match the base to the corresponding height​
    5·1 answer
  • Complete the table.<br><br> x 0 3<br> y=13x+2
    12·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!