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3 years ago

How do you solve 3x -y = -8

Mathematics

2 answers:

Rzqust [24]3 years ago

7 0

Hope it helps !!!!!!!!!

Yanka [14]3 years ago

3 0

Answer:

x-y=-2 2/3

Step-by-step explanation:

You can't have the exact value of x and y, so we have to iscolate the variables, which means getting rid of the three. You have to divide to both sides three.

(3x-y)/3=8/3, x-y=8/3 then you can simplify into mixed number, which is 2 2/3.

x-y=2 2/3. Hope it helped!

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3 years ago

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Answer:

Equation: $Height = \frac{75}{Area}$

Step-by-step explanation:

The question is incomplete as the dimension of the phone was not given.

However, the following explanation will guide you

Given

$Volume = 75\ in^3$

Required

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Volume is calculated as thus;

$Volume = Area * Height$

Substitute 75 for Volume

$75= Area * Height$

Divide through by Area

$Height = \frac{75}{Area}$

The above represent the equation to solve for Height

To solve for height, we need the dimension of the phone or the area.

Take for instance; the length and width of the phone is 5 by 5 inches;

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3 years ago

Faron wants to paint the four walls in his bedroom. The room measures 12 ft long, 10 ft wide and 8 ft high. There are two doors

Rainbow [258]

Answer:

319 square feet.

Step-by-step explanation:

The walls of the room (the ones on the long side) have an area of 12 x 8 = 96 square feet each one. Thus, their area is 96 x 2= 192 square feet.

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Therefore, we have that the total area of the four walls is

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However, we have a door and a window that won't be painted.

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Thus, the total amount of area that won't be painted is

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3 years ago

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Answer:

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This is the combined volume of these 10 fenceposts.

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