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Natasha2012 [34]
3 years ago
9

Find the number of solutions of the equation 6x^2+6x+3=0 by using the discriminant

Mathematics
1 answer:
Neporo4naja [7]3 years ago
4 0

Answer:

No real roots

Step-by-step explanation:

Given

6x^2 + 6x + 3 = 0

Required

The number of solution

The discriminant (d) for ax^2 + bx + c = 0 is:

d = b^2 - 4ac

So, we have:

d = 6^2 - 4*6*3

d = 36 - 72

d = -36

<em>Since </em>d<em>, then the equation has no real roots</em>

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I learn maths and I don't know how to solve this problem.
Lyrx [107]

Answer:

As we get closer to x=-3, the limit is approaches -1, on both sides of -3 so this is a good limit so c is 8.

Step-by-step explanation:

In order for a limit to exists, the left side limit must exist and right side limit must exist and on top of that, they must be equal to each other.

In this case, this a piece wise function and by definition of a limit that exist, the limit of this piece wise function as x approaches 3 from either side, must be equal.

We let x=-3 for the top equation.

( - 3) {}^{2}  - 10 =  - 1

So we set the second equation equal to -1.

- ( {x}^{2} ) + c =  - 1

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So the value of c is 8. We can prove this by graphing as well.

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2 years ago
A new road was added near Riana's neighborhood. The road is 5 miles long, and the city plans 1/10 to place a streetlight every m
elena55 [62]

Answer:

= 49  

Answer.

Step-by-step explanation:

Solution:-

Length of the road = 5 miles

Distance between every two streetlights = 1/10 miles

Total number of streetlights placed on the new road = 5 ÷ 1/10

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= 50 streetlights

As there is already a streetlight at the beginning of the new road, so the number streetlights will be = 50 - 1

5 0
3 years ago
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tamaranim1 [39]
<span>173/<span>25 is the answer to that.</span></span>
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3 years ago
Can someone find the surface area for this? :)
AysviL [449]

Answer:

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Step-by-step explanation:

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Answer:

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