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RUDIKE [14]
3 years ago
10

The coordinates of point E are (−9, −5) and the coordinates of point F are (−2, −1) .

Mathematics
1 answer:
Ksenya-84 [330]3 years ago
8 0
-1+5
--------. =
-2+9

-4
----- = 7/4
7
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Free_Kalibri [48]

Answer:

1134.62 (THE SUM OF 20 TERMS)

Step-by-step explanation:

First we write out our given information:

a8=2a2

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Where here an means the nth term of our sequence.

What does an arithmetic sequence mean? It means to get to the next term in your sequence you add a constant (c) each time:

an+1=an+c

Equivalently:

an+1−an(n+1)−n=c

So an is of slope c (c2 is another constant):

an=cn+c2

Where here c2=a0 (Substitute in n=0 and see why that has to be the case if we let a0 exist)

Now we use the other given information to try to come up with a solution.

Let n=2:

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a8=8c+c2=2a2=4c+2c2

Let n=11

a11=18

a11=11c+c2

But a11−a8=(11c+c2)−(8c+c2)=3c

Hence, a11=3c+a8

a11=3c+4c+2c2=18

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5 0
2 years ago
The value of y varies directly with x. If x = 6, then y = 27. What is the value of y when x = 10 ?
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Step-by-step explanation:

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Any of the 4 people can take the first seat
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3 0
3 years ago
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