Questions by Alexander Perfilyev

Questions by Alexander Perfilyev

Problem 6.1. Let x1, . . . , xn ∈ R and let a1, . . . , an > 0. a) Show that a1x 2 1 + . . . + anx 2 n ≥ 0. b) Show that a1x 2 1 + . . . + anx 2 n = 0 if and only if x1 = · · · = xn = 0

asked Dec 25, 2024

1 answer

0 votes

139k views

What were the crusades? How did they impact Western Europe politically, socially, and economically A. The Crusades were a series of military campaigns in the Middle Ages, driven by religious fervor, aimed

asked Aug 18, 2024

1 answer

0 votes

16.5k views

Which statements are true about the ordered pair (2, 3) and the system of equations? 3x+4y=182x−2y=2 Select each correct answer.

asked Jul 28, 2024

2 answers

0 votes

66.7k views

4. Given the two equations, which has a greater rate of change: f(x) of g(x)? -4-3-2-1 x

asked Jul 21, 2024

1 answer

3 votes

78.3k views

But a bird that stalks down his narrow cage can seldom see through his bars of rage his wings are clipped and his feet are tied so he opens his throat to sing. —"Caged Bird,” Maya Angelou Read the second

asked Jun 14, 2024

1 answer

1 vote

62.9k views

Solve 1000 divided by 39 in fraction

asked Apr 25, 2024

1 answer

5 votes

156k views

Which one of these is the easiest to obtain energy from?: a candle a lamp

asked Dec 4, 2023

1 answer

22 votes

169k views

What number a is 25% of 7? 25 100 a =

asked Sep 12, 2023

1 answer

23 votes

92.8k views

Find the slope of the line passing through the points (-5, -5) and (3, -5). slope:

asked Aug 27, 2023

2 answers

2 votes

90.9k views

Kylie buys a two-quart bottle of juice for $9.60. What is the unit rate of the cost of the juice per fluid ounce? 1 gallon = 4 quarts 1 quart = 2 pints 1 pint = 2 cups 1 cup = 8 fluid ounces Before you

asked Aug 11, 2023

1 answer

0 votes

113k views

5. Think Critically Hector is new to your class today. He missed the lesson on how to use the periodic table to find information about the elements. Describe how you would teach Hector to find the atomic

asked Jul 5, 2023

2 answers

1 vote

68.4k views

Find what is the ratio of the internal energy of hydrogen UB. To the internal energy of helium UJ for two moles of hydrogen and four moles of helium taken at the same temperature

asked Dec 7, 2022

1 answer

24 votes

184k views

Help i don't understand plz help

asked Dec 5, 2022

1 answer

13 votes

46.4k views

Help i don't understand plz help

asked Dec 5, 2022

1 answer

13 votes

46.4k views

Help i don't understand plz help

asked Dec 5, 2022

1 answer

13 votes

46.4k views

Lgbtq consider as karapatang pantao?

asked Nov 28, 2022

1 answer

21 votes

35.2k views

Jakamsmsmsnsnsnsmsmmssm

asked Nov 21, 2022

1 answer

11 votes

202k views

The prefix "semi-" means "partly". Based on your knowledge of the properties of elements, which kind of element is most likely used to make semiconductors? liquids metalloids metals nonmetals

asked Nov 12, 2022

1 answer

11 votes

16.3k views

4(6a + 2b^2) - 1/3 (27b^2 - 15a) if a = -2 and b = 3

asked Aug 27, 2022

1 answer

1 vote

194k views

Lao Zi Philosophy believed in: As Taoism took root, Laozi was worshipped as a god. Belief in the revelation of the Tao from the divine Laozi resulted in the formation of the Way of the Celestial Masters,

asked Aug 23, 2022

1 answer

22 votes

70.7k views

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