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Alexandra [31]
3 years ago
13

What is the value of the discriminant for the quadratic equation 0 = 2x2 + x – 3?

Mathematics
2 answers:
mrs_skeptik [129]3 years ago
6 0
Answer is C. Just plug in the values of 2 , 1 and -3 as a, b, and c accordingly.
Ede4ka [16]3 years ago
4 0
The answer is c. I even checked it was right
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I don’t understand how to do this question so can anyone help me?
nataly862011 [7]

Step-by-step explanation:

from the line above

P1 = -2

P2 = -1

P3 = 1/3

P4 = 2/3

P5 = 1 1/2 = 3/2

The product of P1 to P5,P

=> P = -2×-1×1/3×2/3×3/2 = 2/3

8 0
3 years ago
What is the volume of this sphere? Use a 3.14 and round your answer to the nearest hundredth. 7 m​
kondor19780726 [428]

Answer:

V≈1436.76

Step-by-step explanation:

V=4/3 \pi r^{3}

V= 4/3 3.14*7^{3}

V=1436.75504

Rounded answer is 1436.76

8 0
3 years ago
Read 2 more answers
A jar of marbles has five blue marbles, three red marbles, and four green marbles. What is the possibility of drawing a marble t
solniwko [45]

Answer:

5/36

Step-by-step explanation:

The chance of drawing a blue marble is 5/12. The chance of drawing a green marble is 4/12. You multiply the fractions to get the probability.

5/12 * 4/12 =20/144 = 5/36 simplified.

8 0
3 years ago
Read 2 more answers
Find the value of x then tell whether the side lengths form a Pythagorean triple 6 , 10 , x
masya89 [10]

Answer:

Explanation:

Use the Pythagorean theorem (

a

2

+

b

2

=

c

2

)

Lets label the right triangle such that:

a

=

12

b

=

16

c

=

x

Thus,

12

2

+

16

2

=

x

2

144

+

256

=

x

2

400

=

x

2

√

400

=

x

20

=

x

So our missing side,

c

is

20

We can now say that the sides of our triangle are

12

,

16

,

20

I've included a link that lists a couple of Pythagorean triples (a couple because they are infinitely many).

Step-by-step explanation:

Hope it helpful

3 0
3 years ago
Read 2 more answers
A die is rolled twice. What is the probability of showing a 1 on the first roll and an even number on the second roll?
Ivan

Answer:

1/12

Step-by-step explanation:

Okay, so this will be a compound probability question because there are two parts to the question.

Firstly, a die has 6 sides, and there is only one chance of getting a 1, so the probability would be 1/6.

Furthermore, there are 3 different even numbers on a 6-sided die, so that is 3/6, which can be simplified to 1/2.

Now, because this is a compound probability, we have to multiply 1/2 and 1/6 together, which would give us our answer of 1/12.

6 0
3 years ago
Read 2 more answers
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