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MaRussiya [10]
3 years ago
10

Plz help I will mark Brainliest!

Mathematics
1 answer:
Basile [38]3 years ago
8 0

Answer:

-9-2=-11

Step-by-step explanation:

-9-2=-11

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The difference between roots of the quadratic equation x^2+x+c=0 is 6. find c.
DiKsa [7]

Answer:

\displaystyle c = -\frac{35}{4} = -8.75.

Step-by-step explanation:

Let the smaller root to this equation be m. The larger one will equal m + 6.

By the factor theorem, this equation is equivalent to

a(x - m)(x - (m+6))= 0, where a \ne 0.

Expand this expression:

a\cdot x^{2} - a(2m + 6)\cdot x + a(m^{2} + 6m) =0.

This equation and the one in the question shall differ only by the multiple of a non-zero constant. It will be helpful if that constant is equal to 1. That way, all constants in the two equations will be equal; (m^{2} + 6m) will  be equal to c.

Compare this equation and the one in the question:

The coefficient of x^{2} in the question is 1 (which is omitted.) The coefficient of x^{2} in this equation is a. If all corresponding coefficients in the two equations are equal to each other, these two coefficients shall also be equal to each other. Therefore a = 1.

This equation will become:

x^{2} - (2m + 6)\cdot x + (m^{2} + 6m) =0.

Similarly, for the coefficient of x,

\displaystyle -(2m +6) = 1.

\displaystyle m = -\frac{7}{2}.

This equation will become:

x^{2} + x + \underbrace{\left(-\frac{35}{4}\right)}_{c} =0.

c is the value of the constant term of this quadratic equation.

8 0
3 years ago
Write a percent between 25% and 50%.then write it as a decimal and as a fraction in simplest form
JulsSmile [24]
One possiablilty is 33%, .33, 1/3. <span />
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What is the distance between-10 and 17
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27 is the correct answer
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Samantha's monthly electric bill dropped from $38.21 last month to $37.48 this month. Find the percent decrease. Round to the ne
Anastasy [175]
The answer is 2%

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0.73 / 38.21 = 0.01910

0.01910 x 100= 1.91 percent

To the nearest whole percent will be 2 percentage
4 0
2 years ago
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