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cestrela7 [59]
3 years ago
5

You saved $140 on your new laptop because you bought it online. If this was a 10% savings from the original price, find the orig

inal cost of the laptop.
Mathematics
1 answer:
frez [133]3 years ago
6 0

Answer:

$155.56

Step-by-step explanation:

Find the original cost by dividing the new cost by 0.9:

140/0.9

= 155.56

So, the original cost was approximately $155.56

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A central angle measures 270 degrees . If the radius of the circle is 12 cm , what is the length of the arc intercepted by the c
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4 0
3 years ago
I WILL GIVE BRAINLIEST FOR Correct Answer
VladimirAG [237]
Part A) Find BC, the distance from Tower 2 to the plane, to the nearest foot.

in the triangle ACD
sin16=CD/(7600+BD)--------> CD=sin16*(7600+BD)---------> equation 1 

in the triangle BCD
sin24=CD/BD-----------> CD=sin24*BD---------------> equation 2
equation 1=equation 2
sin16*(7600+BD)=sin24*BD-----> sin16*7600+sin16*BD=sin24*BD
sin24*BD-sin16*BD=sin16*7600----> BD=[sin16*7600]/[sin24-sin16]
BD=15979 ft

in the triangle BCD
cos24=BD/BC---------> BC=BD/cos24-------> 15979/cos24-------> 17491
BC=17491 ft

the answer part 1) BC is 17491 ft

Part 2) Find CD, the height of the plane from the ground, to the nearest foot.

CD=sin24*BD        ( remember equation 2)
BD=15979 ft
CD=sin24*15979 -----------> CD=6499 ft

the answer part 2)  CD is 6499 ft
4 0
3 years ago
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