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exis [7]
3 years ago
13

What is a discriminant and what’s the formula, if there is one?

Mathematics
1 answer:
Grace [21]3 years ago
7 0
\text {Discriminant =}  \sqrt{b^2-4ac}
You might be interested in
Draw a triangle that satisfies this condition: The ratio of the interior angles is 7:11:12
denpristay [2]
The sum of the interior angles of a triangle is 180 degrees.
1.) Translating the problem into equation:
             7:11:12 = 180 degrees
      7x+11x+12x = 180 degrees; Where x = missing number
                    30x = 180
               30x/30 = 180/30 divide both sides by 30
                        x = 6
2.) Substitute the values:
       7x+11x+12x = 180
7(6)+11(6)+12(6) = 180
           42+66+72 = 180
                     180 = 180
3.) Therefore, the angles should be 42 degrees, 66 degrees and 72 degrees.
4.) See attached drawing of triangle

7 0
3 years ago
I had two oranges, Bernice took two, how many do I have left?​
Tpy6a [65]

Answer:

0 Oranges

Step-by-step explanation:

If you had 2 oranges at the start, then your no good friend Bernice took 2 of them, you don't have any oranges left, so get back at him and steal his bannanas! That'll teach him!

6 0
3 years ago
Lynn plotted point G, 3 units to the left and 2 units above point F . Where did Lynn plot point G ?
bekas [8.4K]

Answer:

(2, 6)

Step-by-step explanation:

Point G has a coordinate of x = 5, and y = 4, that is (5, 4).

If Lynn plots point G, such that:

G is 3 units to the left of point F, the x-coordinate of point G = 5 - 3 = 2

G is 2 units above point F, the y-coordinate of point G = 4 + 2 = 6.

Therefore, Lynn plotted point G at x = 2, and y = 6. Which is (2, 6)

3 0
3 years ago
Could someone help me out with these problems? Sorry
AleksandrR [38]

Answer:

  3. 63°

  4. x = 13

Step-by-step explanation:

3. The exterior angle is equal to the sum of the opposite interior angles.

  118° = (4x +7)° + (6x -9)°

  120 = 10x . . . . . . . . . divide by °, add 2

  12 = x

   m∠K = (6x -9)° = (6·12 -9)°

   m∠K = 63°

__

4. Corresponding angles are congruent, and the sum of angles in a triangle is 180°.

  74° + (5x)° + (3x+2)° = 180°

  8x = 104 . . . . . . . . . . . . . . . divide by °, subtract 76

  x = 13 . . . . . . . . . . . . . . . . . .divide by 8

8 0
4 years ago
Suppose you like to keep a jar of change on your desk. Currently, the jar contains the following: 17 Pennies 10 Dimes 19 Nickels
MatroZZZ [7]

Answer:

0.0688 = 6.88% probability that you reach into the jar and randomly grab a nickel and then, without replacement, a penny.

Step-by-step explanation:

A probability is the number of desired outcomes divided by the number of total outcomes.

Probability of grabbing a nickel:

19 nickels out of 17+10+19+23 = 69 coins, so:

P(A) = \frac{19}{69}

Probability of grabbing a penny, considering the first coin grabbed was a nickel:

17 pennies out of 68 coins. So

P(B|A) = \frac{17}{68} = \frac{1}{4}

What is the probability that you reach into the jar and randomly grab a nickel and then, without replacement, a penny?

P(A \cap B) = P(A)P(B|A) = \frac{19}{69} \times \frac{1}{4} = \frac{19}{69*4} = 0.0688

0.0688 = 6.88% probability that you reach into the jar and randomly grab a nickel and then, without replacement, a penny.

6 0
3 years ago
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