3 years ago

Solve by using square roots. 2(x−7)2−8=10

Mathematics

1 answer:

andreev551 [17]3 years ago

6 0

Answer:

THE ANSWER IS THE PIC lolol

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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 $-z:$

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

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Tags: <em>complex number additive inverse opposite algebra</em>

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3 years ago

A bale of fabric is 189 metres long. If lengths of 15 metres, 36 metres and 29 metres are cut off, how much fabric is left?.

Xelga [282]

Answer:

109 metres

Step-by-step explanation:

1. Do 15+36+29 which equals 80

2. Do 189-80 and u get 109

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A dressmaker needs to cut 9-inch pieces of ribbon from rolls of ribbon that are 6 feet

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3 years ago

Solve by using square roots. ​ 2(x−7)2−8=10 ​​​​​

Solve by using square roots. 2(x−7)2−8=10