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3 years ago

If the discriminant is 16 in a quadratic equation what is true about its solutions

1 answer:

8 0

If the discriminant is a positive number, there will be 2 possible solutions. If you replace the entire section of b²-4ac with 16, you will see that the equation becomes; (-b+-√16)/2a --> leading to an answer with the + and another with the -.

If the discriminant is 0, there will be 1 possible solution, (again replace this into the discriminant value) (-b)/2a ---> this formula is used to also find the x coordinates of a vertex, fyi.

If the discriminant is a negative number, there will be no solution (since squareroot of a negative number is not possible)

Hope I helped :)

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Write the point-slope form with two points ..of the given line that passes through the points (0, -3) and (4, 1). Identify (x1,

frez [133]

You need to find the slope too.
$m = \frac{y2 - y1}{x2 - x1} = \frac{ - 3 - 1}{0 - 4} = \frac{ - 4}{ - 4} = \frac{1}{1}$
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use (0, -3)
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3 0

2 years ago

(3 points)

Snezhnost [94]

Answer:

The exponential Function is $20+12h=200$ .

Farmer will have 200 sheep after <u>15 years</u>.

Step-by-step explanation:

Given:

Number of sheep bought = 20

Annual Rate of increase in sheep = 60%

We need to find that after how many years the farmer will have 200 sheep.

Let the number of years be 'h'

First we will find the Number of sheep increase in 1 year.

Number of sheep increase in 1 year is equal to Annual Rate of increase in sheep multiplied by Number of sheep bought and then divide by 100.

framing in equation form we get;

Number of sheep increase in 1 year = $\frac{60}{100}\times20 = 12$

Now we know that the number of years farmer will have 200 sheep can be calculated by Number of sheep bought plus Number of sheep increase in 1 year multiplied by number of years is equal to 200.

Framing in equation form we get;

$20+12h=200$

The exponential Function is $20+12h=200$ .

Subtracting both side by 20 using subtraction property we get;

$20+12h-20=200-20\\\\12h=180$

Now Dividing both side by 12 using Division property we get;

$\frac{12h}{12} = \frac{180}{12}\\\\h =15$

Hence Farmer will have 200 sheep after <u>15 years</u>.

6 0

2 years ago

Please answer asap!!!! will mark brainiest

Inga [223]

Answer:

x=2

Step-by-step explanation:

We know the only number that gets us back to 0 after subtracting 4 is 4, because 4-4=0. The square root of 4 is 2. Hope my explanation wasn't too confusing!

2²=4

4-4=0

3 0

3 years ago

Read 2 more answers

Sponge Bob took 30 minutes to walk a mile last week.

sergey [27]

-20%
work:
(24-30):30*100=
(24:30-1)*100=
80-100=-20

6 0

2 years ago

Is -2.22 a rational or real or integers

mezya [45]