It’s undefined because y would equal 0
<span>(6 + 3i)(6 − 3i) = 45
</span><span>(4 − 5i)(4 + 5i) = 41
</span><span>(−3 + 8i)(−3 − 8i) = 73</span>
38.9 rounded to the nearest tenth is 38.9.
-4.828, 0.828 I hope this helps
The amount of money Debby owes her sister is $9.
<h3>How much does Debby owe her sister? </h3>
When Debby borrows money, the amount of her debt increases and when she pays back her debt decreases. So, when she borrows, the amount she borrows is added and when she pays back, the amount is subtracted.
$10 - $5 + 4 = $9
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