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solong [7]
4 years ago
7

Plz help me with this math ​

Mathematics
1 answer:
erma4kov [3.2K]4 years ago
5 0

Answer:

$68.13

Step-by-step explanation:

$7.29x3=$21.87

$5x2=$10.00

$21.87 + $10.00=$31.87

$100.00-$31.87=$68.13

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Solve the following quadratic equation 6x^2-5x-4=0
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Answer:

=

−

±

2

−

4

√

2

x=\frac{-{\color{#e8710a}{b}} \pm \sqrt{{\color{#e8710a}{b}}^{2}-4{\color{#c92786}{a}}{\color{#129eaf}{c}}}}{2{\color{#c92786}{a}}}

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6

2

−

5

−

4

=

0

6x^{2}-5x-4=0

6x2−5x−4=0

=

6

a={\color{#c92786}{6}}

a=6

=

−

5

b={\color{#e8710a}{-5}}

b=−5

=

−

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c={\color{#129eaf}{-4}}

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=

−

(

−

5

)

±

(

−

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)

2

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4

⋅

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(

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)

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