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Rashid [163]
3 years ago
6

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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Solve the triangle for x.
nalin [4]

Answer:

90.4°

Step-by-step explanation:

Use Law of Cosines to solve:

12² = 9² + 8² - 2(9)(8)Cos X

  144 = 81 + 64 - 144Cos X

     -1 = -144Cos X

         -1/144 = Cos X

            Cos^-1 (-1/144) = X

                     X = 90.39789056°

8 0
3 years ago
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Simplify.
Yuki888 [10]

Answer:

(B) -25/4

Step-by-step explanation:

-5/3 ÷ 4/15

Copy dot flip

-5/3 * 15/4

Rewriting for easier math

-5/4 * 15/3

-5/4 * 5

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4 0
3 years ago
Please help this is important I need to show work too! Brainliest and 20 points
aniked [119]

Answer:

10    because 5+7 is 12           12 is closer to 10 then 15  

so ten. below is your reason

Step-by-step explanation:

If i add 5+7 that will give me 12 i know that when you round you always round to the nearest tenth so i know that 12 is closer to 10 then 15 so my answer will be ten

can i please have brainliest please

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7 0
3 years ago
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Given the following exponential function, identify whether the change represents growth or decay, and determine the percentage r
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Answer:  

0.32 decay

Step-by-step explanation:

3 0
2 years ago
The Basketball Boosters Club plans a pancake supper to raise $1,200. They can serve 240 people. They
wolverine [178]

\huge{ \mathfrak{  \underline{ Answer} \:  \:  ✓ }}

let the number of

  • adults be x

  • children be y

Total number of people : adults + children

  • x + y = 240

  • x = 240 - y - [1]

Total money earned from adults :

  • 6 × x = 6x

Total money earned from children :

  • 2 × y = 2y

Therefore, total money = money earned from each Adult and children.

  • 6x + 2y = 1200 -[2]

Now, let's plug the value of x from equation [1] into equation [2]

  • 6 (240 - y) + 2y = 1200

  • 1440 - 6y + 2y = 1200

  • -4y = 1200 - 1440

  • -4y = - 240

  • y = 60

let's plug the value of y in equation [1]

  • x = 240 - y

  • x = 240 - 60

  • x = 180

Hence, we get :

  • total adults = x = 180

  • total children = y = 60

Correct option is C

_____________________________

\mathrm{ ☠ \: TeeNForeveR \: ☠}

7 0
3 years ago
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