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Illusion [34]
3 years ago
9

Which of the following fractions is equivalent to the repeating decimal 0.55555555555...?

Mathematics
2 answers:
Stella [2.4K]3 years ago
8 0
C. 5/9 ? ? ?

i'm not sure

babunello [35]3 years ago
8 0

C.

Any number that is over the denominator 9, will be repeating it self.

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Answer:

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Step-by-step explanation:

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2 years ago
What is the vertex form, f(x) = a(x − h)2 + k, for a parabola that passes through the point (1, −7) and has (2, 3) as its vertex
kondaur [170]

Answer:

Vertex form: f(x) = -10(x − 2)^2 + 3

Standard form: y = -10x^2 + 40x - 37

Step-by-step explanation:

h and k are the vertex coordinates

Substitute them in the vertex form equation:

f(x) = a(x − 2)^2 + 3

Calculate "a" by replacing "f(x)" with -7 and "x" with 1:

-7 = a(1 − 2)^2 + 3

Simplify:

-7 = a(1 − 2)^2 + 3

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Replace a to get the final vertex form equation:

f(x) = -10(x − 2)^2 + 3

Convert to standard form:

y = -10(x − 2)^2 + 3

Expand using binomial theorem:

y = -10(x^2 − 4x + 4) + 3

Simplify:

y = -10x^2 + 40x - 40 + 3

y = -10x^2 + 40x - 37

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18+(-12)+5 add integers
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What is the value of 7^2-3^3
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Answer:

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Step-by-step explanation:

7^2-3^3

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