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Natasha2012 [34]
2 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]2 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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irina1246 [14]

Answer:  I believe the standard deviation will remain the same, 6, choice A.

Step-by-step explanation:  Standard deviation is calkculated based on the difference of each point from the mean.  If 10 were added to each score, the mean would also increase by 10.  That would mean that the difference between the mean and each score would be exactly the same, leading to an identical standard deviation.  Sounds crazy, but that's what numbers do for a living.

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2 years ago
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Monica’s retirement party cost two dollars, plus an additional three dollars for every guess she invites. If there are 16 guests
lesya692 [45]

Answer:

TWO BUCKS?? ballin on a budget

anyways, if there are 16 guests, the party would cost $50. sounds a lot more correct lol

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2 years ago
SOMEONE PLEASE HELLPPPP
ipn [44]

Answer:

93.39

Step-by-step explanation:

So the sum of exterior angles of the convex octagon is: 360 degrees

This means if we add all the equations that represent each angle, we can set it equal to 360 and solve for x

(x+14) + (2x-3) + (3x+8) + (3x+16) + (2x-17) + (3x-4) + (3x-12) + (6x)

Group like terms

(x+2x+3x+3x+2x+3x+3x+6x) + (14-3+8+16-17-4-12)

Add like terms

23x+2

Now let's set the sum of exterior angles to 360

23x+2 = 360

Subtract 2 from both sides

23x=358

Divide both sides by 23

x\approx 15.565

So by looking at all these, it appears that 6x is the highest value, given that x is positive. The way I estimated, is approximately 15.5, whenever I saw an equation like x+14, I estimated it's about 2x, since 14 is not exactly, but close to 15.5. I did this with each polynomial given. You could also manually check each one

Original equation

6x

Subsitute

6(15.565)

Simplify

93.39

7 0
1 year ago
Who is life insurance best suited for?
Delvig [45]

Answer:

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Step-by-step explanation:

3 0
3 years ago
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Would the answer for 36 be $9.88 or $9.75?
ludmilkaskok [199]

total bill before any discounts $13.

she is a student, so she gets 20% off.

she brought an item of clothing, so she gets 5% off.

so she's really getting 20% + 5% off, namely 25% off her bill.

\bf \begin{array}{|c|ll} \cline{1-1} \textit{a\% of b}\\ \cline{1-1} \\ \left( \cfrac{a}{100} \right)\cdot b \\\\ \cline{1-1} \end{array}~\hspace{5em}\stackrel{\textit{25\% of 13}}{\left( \cfrac{25}{100} \right)13\implies 3.25}~\hfill \stackrel{\textit{bill with all discounts}}{13-3.25\implies 9.75}

6 0
3 years ago
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