2 years ago

Determine the equation of the quadratic function shown below.

Mathematics

1 answer:

makvit [3.9K]2 years ago

4 0

Answer:

Step-by-step explanation:

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What is the sum of the first 6 terms of this geometric sequence? –4, –16, –64, –256, …

MatroZZZ [7]

$a_1=-4;\ a_2=-16;\ a_3=-64;\ a_4=-256;\ ...\\\\r=\dfrac{a_{n+1}}{a_n}\to r=\dfrac{a_2}{a_1}\to r=\dfrac{-16}{-4}=4$

The formula of the sum of a geometric sequence:

$S_n=a_1\cdot\dfrac{1-r^n}{1-r}$

We have:

$a_1=-4;\ n=6;\ r=4$

substitute:

$S_6=-4\cdot\dfrac{1-4^6}{1-4}=-4\cdot\dfrac{1-4096}{-3}=-4\cdot\dfrac{-4095}{-3}=-4\cdot1365=-5460$

Answer: C. -5460

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3 years ago

A random survey of the quality of city parks is taken. Sixty-five percent of the people surveyed were pleased with the condition

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Step-by-step explanation:

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3 0

2 years ago

Please help! (image is for question 3)

nika2105 [10]

The formula for the total sum of the inner angles of the polygon is

Sn= (n-2) 180°

1) S6= (6-2) 180 = 4*180 = 720° In the hexagon all angles are equal

α= S6/6= 720/6= 120°

2) In each polygon the sum of the external angles is 360°

3) S5= (5-2) 180 = 540° than we can add up all angles

x+131+108+107+110=540 => x= 540-456= 84°

4) α = 360/5=72°

Good luck!!!

6 0

2 years ago

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Jaylyn rode her bicycle in a bike a thon. She road 33.48 miles in 2.7 hours. If she rode the same speed, what was her speed in m

qaws [65]

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2 years ago

Please help<br> 15x ^2 −4x−4= ?

oksian1 [2.3K]

<h3>I'll teach you how to solve 15x ^2 −4x−4</h3>

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15x ^2 −4x−4

Break the expressions into groups:

(15x^2+6x) + (-10x-4)

Factor out 3x from 15x^2+6x:

3x(5x+2)

Factor out -2 from -10x-4:

-2(5x+2)

3x(5x+2) -2(5x+2)

Factor out common term 5x+2:

(5x+2)(3x-2)

Your Answer Is (5x+2)(3x-2)

plz mark me as brainliest :)

3 0

3 years ago