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3 years ago

What is the product of 5−2i and 3−4i? Enter your answer, in standard form, in the box

Mathematics

1 answer:

Lelechka [254]3 years ago

7 0

Answer:

$\boxed{7-26i}$

Step-by-step explanation:

The binomials are multiplied in the usual way, using FOIL or the distributive property:

(5 -2i)(3 -4i) = 15 -20i -6i +8i²

Since i² = -1, this becomes ...

= 15 -20i -6i -8 = 7 -26i

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gulaghasi [49]

If you're finding the value of z, z would equal 13/2 or 6.5
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A student has 10 coins in her pocket that have a value of $0.85. The coins are either

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Answer:

$\left\{\begin{matrix}x+y=10\\ 0.05x+0.10y=0.85\end{matrix}\right.$

Step-by-step explanation:

<u>System of Equations</u>

Let's call:

x = number of nickels in the student's pocket

y = number of dimes in the student's pocket

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$\left\{\begin{matrix}x+y=10\\ 0.05x+0.10y=0.85\end{matrix}\right.$

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3 years ago

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Answer:

The answer would be c. 1440

Step-by-step explanation:

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yuradex [85]

1+2=3.
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Answer:

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