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WITCHER [35]
3 years ago
6

A box spring in the shape of a rectangular prism has a length of a 40 in., a width of 80 in., and a height of 4 of 9 in. what is

the surface area of the box spring?
A) 8,560
B) 9,600
C) 19,200
D) 28,800​
Mathematics
1 answer:
gladu [14]3 years ago
7 0
19,200 ! To get the surface area of the rectangular prism you have to get the area of each side. Length x Width x Sides(6 in your case).
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Given:

The system of equations is:

Line A: y=x-4

Line B: y=3x+4

To find:

The solution of given system of equations.

Solution:

We have,

y=x-4              ...(i)

y=3x+4           ...(ii)

Equating (i) and (ii), we get

x-4=3x+4

-4-4=3x-x

-8=2x

Divide both sides by 2.

-4=x

Substituting x=-4 in (i), we get

y=-4-4

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The solution of system of equations is (-4,-8).

Now verify the solution by substituting x=-4, y=-8 in the given equations.

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This statement is true.

Similarly,

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-8=-8

This statement is also true.

Therefore, (-4,-8) is a solution of the given system of equations, because the point satisfies both equations. Hence, the correct option is C.

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yulyashka [42]

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Step-by-step explanation:

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Flauer [41]

Answer:

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Step-by-step explanation:

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Step-by-step explanation:

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Usimov [2.4K]

Answer:

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\frac{b}{5}   >  - 1

Multiply by 5 to isolate b.

b  >  - 5

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If you put any number greater than -5, you'll output greater than - 1.

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