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2 years ago

Use a recursive function for the geometric sequence 2, -6, 18, -54,... to represent the 9th term.

Mathematics

2 answers:

WARRIOR [948]2 years ago

5 0

Answer:

The Answer is A. f(9) = f(8) • (−3)

Hope This Helps!

Jlenok [28]2 years ago

4 0

Answer:

f(9) = f(8)·(-3)

Step-by-step explanation:

A recursive function is one where each successive term is calculated using the previous term;

The clear pattern demonstrated in the sequence of terms shown is that each term is multiplied by -3 to give the next one;

Hence, the correct option is the first.

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3 years ago

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Rufina [12.5K]

Answer: C) exactly one triangle

Step-by-step explanation:

Given: ∠A = 45°, ∠B = 65°, side c = 4 cm

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3 years ago

What is the focus of the parabola? y=−14x2−2x−2

nataly862011 [7]

First, we need to transform the equation into its standard form (x - h)²=4p(y - k).
Using completing the square method:

y = -14x² - 2x - 2
y = -14(x² + 2x/14) - 2
y = -14(x² + 2x/14 + (2/28)²) -2 + (2/28)²
y = -14(x + 1/14)² - 391/196
-1/14(y + 391/196) = (x + 1/14)²

This is a vertical parabola and its focus (h, k + p) is (-1/14, -391/196 + 1/56) = (-1/14, -775/392).

Or (-0.071,-1.977).

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2 years ago