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shutvik [7]
3 years ago
15

How do you solve quadratic equations?

Mathematics
1 answer:
masha68 [24]3 years ago
8 0
In any equation there is a variable (usually x). In a quadratic equation there is a lot involved.

-B (+or-) sqrt of b^2 - 4 x A x C
________________________  divide it by
               2 x A
                                                   There is usually an original equation that looks like:  Ax^2 + Bx + C = 0    Use the variables from the equation to the left to fill the upper equation.  (You can also look up a better formula if confused).

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Of the marbles in a bag 5 are red 4 are yellow and 4 are blue Sandra will randomly choose one marble from the bag fill in the bl
timurjin [86]

Answer:

A. 4/13

B. Likely.

4 0
2 years ago
Determine the point on the graph of the linear equation 2x + 5y = 19, whose ordinate is 1 1/2 times its abscissa.
rosijanka [135]

Answer:

(2, 3)

Step-by-step explanation:

2x + 5y = 19

5y = -2x + 19

y = -\frac{2}{5} x + \frac{19}{5}

P(abscissa, ordinate)

P(x, 1.5x)

P(2, 3)

3 = -\frac{2}{5} (2) + \frac{19}{5}

3 = -\frac{4}{5} + \frac{19}{5}

3 = 15/5

3 = 3

8 0
3 years ago
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mars1129 [50]

Answer:

1) x+10

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Step-by-step explanation:

6 0
2 years ago
Read 2 more answers
If x is a rational number and y is the opposite of x, why do x and y have the same absolute value
grin007 [14]

Answer:

Absolute value is the distance away from zero, so if x is a rational number and y is opposite, they would both be the same distance away from zero, regardless of their sign.  

Step-by-step explanation:

Absolute value is the distance of a number away from zero.  For example, if x is equal to the rational number -2, the absolute value of -2 is just 2, given that both 2 and -2 are only a distance of 2 away from the number zero.  Think of it as your walk or drive to school.  If you live 4 miles from school, you drive a distance of 4 miles there and 4 miles back.  That distance is not calculated as a positive 4 miles there and a negative 4 miles back, but rather just 4 miles there and 4 miles back, for a total distance of 8 miles.  So, if x=4 and y=(-4), the absolute value of both would be 4.  

8 0
3 years ago
PLEASE HURRY! 30 PTS! Which statements are true? SELECT EACH CORRECT ANSWERS! A.) 100x^3+5=5x^3(20x+1) B.)4x^2+10x=2x(2x+5) C.)3
kirill [66]

Answer:

B and C

Step-by-step explanation:

Distribute

4x^2 + 10x = 4x^2 +10x

30x^4 - 12x^3 = 30x^4 - 12x^3

4 0
3 years ago
Read 2 more answers
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