2 years ago

3. Consider the complex numbers z and w below. Find the difference z-

Mathematics

1 answer:

Rina8888 [55]2 years ago

8 0

Answer:

see explanation

Step-by-step explanation:

z - w

= 1 - 3i - (- 2 + 5i) ← distribute parenthesis by - 1

= 1 - 3i + 2 - 5i ← collect like terms

= 3 - 8i

------------------------------------------------------------

z × w

= (1 - 3i)(- 2 + 5i) ← expand using FOIL

= - 2 + 5i + 6i - 15i² [ i² = - 1 ]

= - 2 + 11i + 15

= 13 + 11i

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Answer:

Step-by-step explanation:

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2 years ago

Drinking 8 fluid ounces of milk provides 270.0 milligrams of calcium. How many fluid ounces of milk provide 72.5 milligrams of c

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Set up a proportion:

$\frac{8}{270} = \frac{x}{72.5}$

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2 years ago

Read 2 more answers

What is the answer 4x+3=-5

weqwewe [10]

Answer: x=-2

Step-by-step explanation:

What we are doing is isolating the variable

4x+3=-5

4x-3=-3 subtract 3 from five

4x=-8 divide to solve x

x=-2