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sleet_krkn [62]
2 years ago
15

What are the steps to simplify (5-7i)(-4-3i)?

Mathematics
2 answers:
SVETLANKA909090 [29]2 years ago
8 0
1. Distribute 5-7i×-4-3i
2. Multiply 5-7i by -4-3i
3. -20+10i
vekshin12 years ago
3 0
Add the like terms so (1)(-10i)
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Solve the system of equations<br><br> a+s=560<br><br> 8a+3s=2905
Rasek [7]

Answer:

a=245 s=315

Step: Solve a+s=560 for a:

a+s=560

a+s=560(Add -s to both sides)

a=−s+560

Step: Substitute −s+560 for a in 8a+3s=2905:

8a+3s=2905

8(−s+560)+3s=2905

−5s+4480=2905(Simplify both sides of the equation)

−5s+4480=2905(Add -4480 to both sides)

−5s=−1575

−5s=−1575(Divide both sides by -5)

s=315

Step: Substitute 315 for s in a=−s+560:

a=−s+560

a=−315+560

a=245

4 0
2 years ago
What is the value of this expression? (−4)^4?
Charra [1.4K]
-4^4= -4*-4*-4*-4

-4*-4=16
16*-4=-64
-64*-4= 256

Final answer: 256
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3 years ago
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wariber [46]

Answer:

A

Step-by-step explanation:

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Lesechka [4]

Answer:

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Step-by-step explanation:

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