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2 years ago

X+y+z=-6 x-y+3z=-18 2x+2y+2z=-8

Mathematics

2 answers:

Temka [501]2 years ago

3 0

Answer:

Step-by-step explanation:

hello :

the system is : x+y+z=-6.....(1)

x-y+3z=-18.....(2)

2x+2y+2z=-8.....(3)

use (3): 2(x+y+z) = - 8 so : x+y+z = -4

use (1) : x+y +z = -6 -6=-4 false

no solutions

valina [46]2 years ago

3 0

ANSWER: Given the system of equations, there are no solutions.

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pishuonlain [190]

Answer:

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Step-by-step explanation:

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3 years ago

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hjlf

Answer:

422.39

Step-by-step explanation:

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π r²

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3 years ago

Read 3 more answers

Stuck on these two shapes need help in working out the surface area

ArbitrLikvidat [17]

Answer:

Part 1) The surface area of the triangular prism is $SA=660\ cm^{2}$

Part 2) The surface area of the trapezoidal prism is $SA=2,864\ cm^{2}$

Step-by-step explanation:

Part 1) Find the surface area of the triangular prism

we know that

The surface area is equal to

$SA=2B+PL$

where

B is the area of the triangular base of the prism

P is the perimeter of the base of the prism

L is the length of the prism

Find the area of the triangular base B

$B=\frac{1}{2}(10)(12)=60\ cm^{2}$

Find the perimeter of the base P

$P=10+13+13=36\ cm$

$L=15\ cm$

substitute the values

$SA=2(60)+(36)(15)=660\ cm^{2}$

Part 2) Find the surface area of the trapezoidal prism

we know that

The surface area is equal to

$SA=2B+PL$

where

B is the area of the trapezoid base of the prism

P is the perimeter of the base of the prism

L is the length of the prism

Find the area of the trapezoid base B

$B=\frac{1}{2}(28+15)(8)=172\ cm^{2}$

Find the perimeter of the base P

$P=15+28+10+10=63\ cm$

$L=40\ cm$

substitute the values

$SA=2(172)+(63)(40)=2,864\ cm^{2}$

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3 years ago

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kirill115 [55]

Answer:

The second choice is correct

Step-by-step explanation:

Go to a point like 4,3 and 0,1. the difference in x is 4 since 4-0 = 4.

4,3 and 0,1 now we find the change in y, 3-1 which is 2. the formula for slope is change in y over change in x so 2/4 is the slope or 1/2.

The y intercept of the line is 1 since the line touches the y-axis at the y, 1.

therefore the equation is y = 1/2x + 1.

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3 years ago

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dimulka [17.4K]

The area of the smaller rectangle is 12, and the area of the bigger one is 50, so the probability that it is not chosen inside the shaded region is (50-12)/(50)=76%

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3 years ago