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3 years ago

13

What is the mean of 35,40,12,16,25,10

2 answers:

grandymaker [24]3 years ago

7 0

Answer is in attachment below.

Naily [24]3 years ago

4 0

All all numbers together: 138 then divide 138 by total amount of numbers which is 6. answer=23

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3 years ago

On hiking trip,Lavinia notices that she hikes about 12 kilometers every 4 hours. If she continues at this rate,use a ratio table

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3 years ago

The function y=-x^2+65x+256 models the number y of subscribers to a website, where x is the number of days since the website lau

Wittaler [7]

Answer:

$y = 30x+290$

Step-by-step explanation:

Given

$y=-x^2+65x+256$

Required

The linear function of a competitor's website

On day 1, both websites have the same subscribers.

This implies that:

$y=-x^2+65x+256$

Substitute: $x =1$

$y=-(1)^2+65*1+256$

$y=-1+65+256$

$y=320$

This implies:

$(x_1,y_1) = (1,320)$

On day 34, both websites have the same subscribers.

This implies that:

$y=-x^2+65x+256$

Substitute: $x =34$

$y=-(34)^2+65*34+256$

$y=-1156+2210+256$

$y=1310$

This implies:

$(x_2,y_2) = (34,1310)$

To calculate the linear function of the competitor, we have:

$(x_1,y_1) = (1,320)$

$(x_2,y_2) = (34,1310)$

Calculate slope (m)

$m = \frac{y_2 - y_1}{x_2 -x_1}$

$m = \frac{1310 - 320}{34-1}$

$m = \frac{990}{33}$

$m = 30$

The equation is then calculated as:

$y = m(x - x_1) + y_1$

This gives:

$y = 30 * (x - 1) + 320$

Open bracket

$y = 30x - 30 + 320$

<em></em> $y = 30x+290$ <em> --- This represents the linear function of the competitor's website</em>

5 0

2 years ago