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3 years ago

Why was it important to the Apalachee?

1 answer:

8 0

The Apalachee spoke the Apalachee language, a Muskogean language which became extinct. It was documented by Spanish settlers in letters written during the Spanish Colonial period. Around 1100 indigenous peoples began to cultivate crops. Agriculture was important in the area that became the Apalachee domain.

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When signal lights are not working, drivers should stop and follow the procedures used at an intersection controlled by:?

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3 years ago

“They got what they deserved, I hope all the thugs are punished! “

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Neutralist, because neutralist is a person who pleads for a cause or propound an idea.

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3 years ago

Read 2 more answers

Solve using any appropriate method. If the system has an infinite number of solutions, use set-builder notation to write

aniked [119]

Answer:

$13.\ (x,y) = (-4,3)$

$14.\ No\ Solution$

$15.\ (x,y) = (-12,-32)$

$16.\ (x,y) = (3.75,6.25)$

$17.\ No\ Solution$

Explanation:

13)

$4x + 8y = 8$ ---- (1)

$5x + 7y = 1$ ------ (2)

Multiply equation by 5 and equation 2 by 4

$5(4x + 8y = 8)$

$4(5x + 7y = 1)$

$5 * 4x + 5 * 8y = 5 * 8\\4*5x + 4*7y = 4 *1$

$20x + 40y = 40$ ------ (3)

$20x + 28y = 4$ ------ (4)

Subtract equation 3 from 4

$(20x + 28y = 4) - (20x + 40y = 40)$

$20x - 20x+ 28y -40y= 4-40$

$-12y = -36$

Divide both sides by -12

$\frac{-12y}{-12} = \frac{-36}{-12}$

$y = 3$

Substitute $y = 3$ in equation 1

$4x + 8y = 8$

$4x + 8(3) = 8$

$4x + 24 = 8$

Subtract 24 from both sides

$4x + 24 - 24 = 8 - 24$

$4x = -16$

Divide both sides by 4

$\frac{4x}{4} = \frac{-16}{4}$

$x = -4$

$Hence\ (x,y) = (-4,3)$

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

14)

$7x + 7y = 8$ ---- (1)

$5x + 5y = 10$ ----- (2)

Make x the subject of formula in (2)

$5x + 5y = 10$

$5x + 5y - 5y = 10 - 5y$

$5x = 10 - 5y$

$\frac{5x}{5} = \frac{10 - 5y}{5}$

$x = \frac{10}{5} - \frac{5y}{5}$

$x = 2 - y$

Substitute $x = 2 - y$ in (1)

$7x + 7y = 8$

$7(2-y) + 7y = 8$

Open bracket

$7*2-7*y + 7y = 8$

$14 -7y + 7y = 8$

$14 \neq 8$

At this point, we conclude that thee system has no solution.

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

15)

$y = 3x + 4$ --- 1

$5x + y = -92$ ----2

Substitute $y = 3x + 4$ in (2)

$5x + 3x + 4 = -92$

$8x + 4 = -92$

Subtract 4 from both sides

$8x + 4 -4= -92 -4$

$8x = -96$

Divide both sides by 8

$\frac{8x}{8} = \frac{-96}{8}$

$x = -12$

Substitute $x = -12$ in equation 1

$y = 3x + 4$

$y = 3(-12) + 4$

$y = -36 + 4$

$y = -32$

$Hence\ (x,y) = (-12,-32)$

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

16)

$0.4x + 0.4y = 4$

$0.4x - 0.4y = 1$

Add both equations

$(0.4x + 0.4y = 4) + (0.4x - 0.4y = 1)$

$0.4x+0.4x + 0.4y-0.4y = 4+1$

$0.8x = 5$

Divide both sides by 0.8

$\frac{0.8x}{0.8} = \frac{5}{0.8}$

$x = 6.25$

Substitute $x = 6.25$ in (1)

$0.4(6.25) + 0.4y = 4$

$2.5 + 0.4y = 4$

Subtract 2.5 from both sides

$2.5 -2.5 + 0.4y = 4 -2.5$

$0.4y = 1.5$

Divide both sides by 0.4

$\frac{0.4y}{0.4} = \frac{1.5}{0.4}$

$y = \frac{1.5}{0.4}$

$y = 3.75$

$Hence,\ (x,y) = (3.75,6.25)$

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

17)

$x - 4y = 1$

$x= 7+ 4y$

Substitute $x= 7+ 4y$ in (1)

$7 + 4y - 4y = 1$

$7 \neq 1$

At this point, we conclude that thee system has no solution.

6 0

3 years ago

Which is an example of a demand account?

Alexus [3.1K]

Checkings because ur allowed to withdraw money

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3 years ago

Professor Murphy investigates aggression based on how an aggressor perceives information in a situation and how s/he makes decis

LuckyWell [14K]

Answer:

Cognitive

Explanation:

Based on the information provided within the question it can be said that Professor Murphy is most likely a psychologist in the cognitive subfield. Cognitive Psychology refers to the study of the various mental processes that deal with "attention, language use, memory, perception, problem solving, creativity, and even thinking". Which is what Professor Murphy is investigating by studying the different aspects that affect aggression.

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3 years ago