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zaharov [31]
3 years ago
6

Laura bought a pair of shoes for 20$. The shoes were on sale for 15% off, and she also used a coupon for an extra 20% off. Befor

e sales tax was applied, how much did Laura pay for the shoes?
Mathematics
1 answer:
Fittoniya [83]3 years ago
6 0

Answer:

$13.60 before sales tax

Step-by-step explanation:

$20 x .85 (aka 15% off) = $17

then

$17 x .80 (aka 20% off) = $13.60

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If a pond has a major axis of 68 feet and a minor axis of 32 feet how far apart are the foci
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Answer:

The distance between foci is 60 feet

Step-by-step explanation:

we are given

a pond has a major axis of 68 feet

so, a=\frac{68}{2} =34

a minor axis of 32 feet

so, b=\frac{32}{2} =16

now, we know ellipse formula

c^2=a^2-b^2

where

c is the distance between center and focus

so, we can plug it and find c

c^2=34^2-16^2

c=30

Distance between foci is

=2c

=2\times 30

=60


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