3 years ago

a sweater is on sale for 20% off the regular price. The sale price is $60. What is the regular price of the sweater?

1 answer:

6 0

Hey there!

What you do is find how much was taken off and add that to the price

60*.2= 12

12 was taken off of the original price

Now add:
60+12= 72

So the regular price was $72

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The equation p= 2.5m + 35 represents the price p of a bracelet, where m is the cost of the materials. The price of a bracelet is

Klio2033 [76]

P= 2.5m + 35 (replace p with 115)
115= 2.5m + 35 (subract 35 from each side)
115 - 35 = 2.5m
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3 years ago

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lubasha [3.4K]

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1 year ago

Find the product of the complex numbers (-5+ 8i) and (3 - 8i)

Liula [17]

Answer: 49+64i

Step-by-step explanation:

Concept to know:

i=√-1

i²=-1

i³=-i

$i^{4}$ =1

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(-5+8i)(3-8i)

=-15+40i+24i-64i²

=-15+64i-64i²

=-15+64i+64 (remember, i²=-1)

=49+64i

Hope this helps!! :)

Please let me know if you have any question or need further explanation

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