While shopping, Dawn finds a backpack that she likes on the sale rack. Its original price is $60,

Mathematics

1 answer:

pochemuha3 years ago

8 0

Answer:

No, Dawn is not correct.

Step-by-step explanation:

I cannot provide you with a model, but the 30% discount should be applied first. 60*(70/100) = 42. Therefore, after the 30% discount, the cost will be $42. After that, Dawn should use her coupon. It will then get you 42*(85/100) = 35.70. Therefore, she would pay $35.70.

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Which is the additive inverse of the complex number -8+3i?

lawyer [7]

The additive inverse of a complex z is a complex number $-z,$ so that

$\mathsf{z+(-z)=-z+z=0+0i=0}$

Finding $-z:$

$\mathsf{z=-8+3i}\\\\\\ \mathsf{z+(-z)=0+0i}\\\\\ \mathsf{-8+3i+(-z)=0+0i}\\\\ \mathsf{-z=0+0i+8-3i}\\\\ \mathsf{-z=(0+8)+(0i-3i)}\\\\ \boxed{\begin{array}{c}\mathsf{-z=8-3i} \end{array}}\qquad\checkmark$

If you're having problems understanding this answer, try seeing it through your browser: brainly.com/question/2159647

I hope this helps.

Tags: complex number additive inverse opposite algebra

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N76 [4]

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3 years ago

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ollegr [7]

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Answer:

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