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4 years ago

Describe the earths lithosphere include the depths and different parts

1 answer:

6 0

Earth's lithosphere. Earth's lithosphere includes the crust and the uppermost mantle, which constitute the hard and rigid outer layer of the Earth. The lithosphere is subdivided into tectonic plates. ... The lithosphere is underlain by the asthenosphere which is the weaker, hotter, and deeper part of the upper mantle.

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An insured has a life insurance policy with a face amount of $500. He pays a premium each week to the agent who sold him the pol

maxonik [38]

Answer:

Industrial life

Explanation:

An industrial life insurance is an insurance policy which provides the insurance coverage to the industrial workers or for those people who are not able to buy or afford insurance for some bigger amounts. In industrial life insurance policy, a fixed amount is provided to the insurer in case of an accident or death.

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3 years ago

A fish laying hundreds of eggs is an example of _________.

Dmitry_Shevchenko [17]

C producing offspring

8 0

3 years ago

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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.

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4 years ago

The Roman Republic ended when which leader came to power? A.Caesar Augustus. B. Julius Apalonius. C. Marc Anthony. D. Pompey

dem82 [27]

I do believe the answer is A

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3 years ago

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4 years ago