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Vilka [71]
3 years ago
11

Find the missing number. show working. 13+?=15+1​

Mathematics
2 answers:
Molodets [167]3 years ago
8 0

Answer: 3

Step-by-step explanation:

13 + ? = 15 + 1

13 + ? = 16

-13 -13

? = 3

saw5 [17]3 years ago
7 0

13+2=15+1=16 that is the answer

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Multiply (2 -10i) (-5 + 3i) Show each step for credit!
jonny [76]

Answer:

The answer is

<h2>20 + 56i</h2>

Step-by-step explanation:

(2 -10i) (-5 + 3i)

Using FOIL multiply each term in the first bracket by the terms in the second <u>bracket</u>

That's

2(-5) + 2(3i) - 10i(-5) - 10i(3i)

<u>Multiply the numbers and simplify</u>

We have

- 10 + 6i + 50i - 30i²

From the rules of imaginary numbers

<h3>i² = - 1</h3>

So we have

- 10 + 56i - 30(- 1)

- 10 + 56i + 30

Simplify

30 - 10 + 56i

We have the final answer as

<h3>20 + 56i</h3>

Hope this helps you

5 0
2 years ago
Lou wants to make a coffee mixture to sell. He is going to mix Sumatra coffee which costs $2.50 per pound with Columbian coffee
Scilla [17]
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3 years ago
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2 years ago
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