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Elis [28]
3 years ago
6

PLZ HELP, GIVNG BRAINLIEST!! Look at the pic to answer the question's both parts.

Mathematics
1 answer:
zhuklara [117]3 years ago
3 0

Answer:

see explanation

Step-by-step explanation:

Given

(a + bi)(a - bi) ← expand using FOIL

= a² - abi + abi - b²i² → i² = - 1

= a² + b²

Since a and b are any real numbers, then

a² + b² is a real number

B

When a complex number is multiplied by its conjugate the result is always real.

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Amelia ,Hayden and Sophie did a test the total for the test was 75 marks Amelia got 56% of 75 marks Hayden got 8/15 0f the 75 ma
boyakko [2]

Step-by-step explanation:

Amelia got 56% of 75 so

(56/100)*75=(56*75)/100=4200/100=42

Hayden got 8/15 of 75 so

(8/15)*75=(8*75)/15=600/15=40

and Sophie that got 43 out of 75

so we see that Sophie got the highest points.

6 0
3 years ago
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Kathy has savings a hundred thousand if she invested 100,000 in a saving fund thats adds 5% each year about how much will her sa
jok3333 [9.3K]

Answer:200,000

Step-by-step explanation:

If it increases 5% every year in 20 years it will Have increased 100% therefore the number would have doubled

5 0
2 years ago
Help plz anyone!?This thing is due 50 points anyone!?
ANTONII [103]

Answer:i dont know

Step-by-step explanation:

3 0
3 years ago
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Assume that we are interested in the average length of 1015 fishes in Square Lake, WI. Also assume that all information for all
zimovet [89]

Answer is given below

Step-by-step explanation:

given data

average length of all 1015 fishes = 98.06 mm

randomly selects 50 fishes average length = 101.04 mm

solution

  • When we get here, we mean to measure, so here we measure a fish in a square lake.
  • And the variable means that a fish varies from fish to fish, so the length of the fish in the squares
  • parameter mean that all individuals in the population so the parameter is average length of all 1015 fish in square lake
  • statics is selct of individual in sample so statistic is average length of random sected so fish in square lake

8 0
3 years ago
Can you help?
Ber [7]
-5 1/3, -2 1/2, 3.75, 4.2 ( this is the order from least to greatest)
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