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3 years ago

A quadratic equation has exactly one real number solution.Which is the value of its discriminant ?-1,0,1 or 2

Mathematics

1 answer:

Ivanshal [37]3 years ago

4 0

Answer:

The value of the discriminant is 0

Step-by-step explanation:

The discriminant of a quadratic equation is calculated as thus:

b² - 4ac and it is represented by letter D.

Hence, D = b² - 4ac..

This discriminant can take either of 3 range of values.

1. D > 0. This implies that the discriminant has a value greater than 0 and this means that the root has 2 different real solutions

2. D = 0. This implies that the discriminant equals 0 and this means that the root has only 1 solution.

3. D < 0. This implies that the discriminant is less than 0 and this means that the root has 2 different complex solutions.

Hence, D = 0 is the correct answer to this question.

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Lara is setting up a convention room. She is expecting 240 attendees and can comfortably fit chairs in rows of 16. How many rows

madam [21]

Answer:

Hello, lets break it down.

Step-by-step explanation:

Expecting 240 attendees.

Can fit

16 chairs into a row so

240 divided by 16 is 15 that means she needs to set up 15 rows.

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3 years ago

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damaskus [11]

Answer:

The answer is C

Step-by-step explanation:

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3 years ago

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One pair of corresponding sides of 2 similar triangles are 3 and 8 inches long, respectively. If the perimeter of the smaller tr

Ket [755]

Answer:

Step-by-step explanation:

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3 years ago

If AJKL = ARST, which congruences are true by CPCTC? Check all that apply.

evablogger [386]

Based on the CPCTC theorem, the congruences that are true about the given triangles are:

B. ∠K ≅ ∠S

C. KL ≅ ST

D. JK ≅ RS

<h3>What is the CPCTC Theorem?</h3>

According to the CPCTC theorem states that if two triangles are congruent to each other, then, all their corresponding parts will be congruent to each other.

Given that triangles JKL and RST are congruent to each other, therefore:

∠J ≅ ∠R

∠K ≅ ∠S

∠L ≅ ∠T

JK ≅ RS

KL ≅ ST

JL ≅ RT

Therefore, the congruences that would be true by CPCTC are:

B. ∠K ≅ ∠S

C. KL ≅ ST

D. JK ≅ RS

Learn more about the CPCTC theorem on:

brainly.com/question/14706064

#SPJ1

5 0

2 years ago

A line whose slope is 4 and passes through the point (0, -9) lies on the line whose equation is: 4x + y = -9 4x - y = 9 y - 4x =

Papessa [141]

The general form of the equation of a line is represented by the Affine function y = mx + b, in which m represents the slope, b the y-intercept, y and x the coordinates of a point.
By hypothesis, we got the slope (m = 4), and the coordinates of a point (in which x = 0 and y = -9). So all we need to do is to find the y-intercept b.
Let's replace the values we have in the equation y = mx + b:

-9 = 4*0 + b
-9 = 0 + b
-9 = b.

We got now the y-intercept. So the final equation of the line is:
y = 4x - 9

If we subtract 4x from each side, we get:
y - 4x = -9
And if we multiply both sides by -1, we get:
4x - y = 9

So the equation of the line, based on your choices, is 4x - y = 9.

I've added a picture of the graph of the equation under the answer.

Hope this Helps! :)

4 0

4 years ago