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3 years ago

Please help and show work!

Mathematics

1 answer:

Lilit [14]3 years ago

3 0

Answer:

Step-by-step explanation:

The given quadratic must be rewritten in standard form before anything else is done: -2x^2 + 8x - 8 = 0. The coefficients of the x terms are {-2, 8, -8}.

The discriminant b^2 - 4ac is therefore (8)^2 - 4(-2)(-8), or 64 - 64, or 0.

A zero discriminant points to two real, equal solutions.

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What is the 101st term for the sequence 13, 9, 5, 1... ?

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Step-by-step explanation:

a=13
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${:}\longrightarrow$ $\sf S_n={\dfrac {n}{2}}\left [2a-(a-1)d\right]$

${:}\longrightarrow$ $\sf S_101={\dfrac {101}{2}}\left [26 (12)4\right]$

${:}\longrightarrow$ $\sf 50.5×1248$

${:}\longrightarrow$ $\sf S_101=63504$

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Step-by-step explanation:

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Step-by-step explanation:

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