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Tems11 [23]
3 years ago
5

what is the equation of the line that is parallel to the line y=2x+7 and passes through the point (-2,1)

Mathematics
1 answer:
vichka [17]3 years ago
8 0
The line is parallel so the slope is the same. So the slope = 2
Using a point-slope equation we have
 y-y1 = 2(x-x1)
plug in the points
y-1 = 2(x-(-2))
=> y = 2x + 4 - 1 
=> y = 2x +3
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Find a1 for the arithmetic series with s20 = 80 And d = 2
AfilCa [17]
We know that
the <span>formula of the arithmetic series  is
</span>Sn=<span>n[2(a1) + (n - 1)d]/2 
where
Sn=80
n=20
d=2
a1=?
then
80=20*[2*a1+19*2]/2----------------> </span>160=[40*a1+760]
160=[40*a1+760]----------> a1=(160-760)/40------------> a1=-15
<span>
the answer is
a1=-15

</span>
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3 years ago
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Can someone solve this? No guessing! Explain very well! Make sure the answer is right!
DedPeter [7]
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4 0
3 years ago
Find the next three terms in the arithmetic sequence: -33, -24, -15, -6, ...
katen-ka-za [31]

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4 0
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Tanisha plants 2/3 of her garden with flowers.She covers 1/4 of this part of the garden with roses.What part of her whole garden
Talja [164]

Answer:

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Step-by-step explanation:

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3 years ago
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