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3 years ago

I don’t know this please help..

Mathematics

1 answer:

nekit [7.7K]3 years ago

5 0

Answer:

The surface area would be 28 square feet.

Step-by-step explanation:

To solve this, input the values for each of the variables every time you see it. l = length, w = width and h = height.

SA = 2lw + 2hw + 2hl

SA = 2(2)(1) + 2(4)(1) + 2(4)(2)

SA = 4 + 8 + 16

SA = 28

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2 years ago

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Please help solve: Graph y-4=2(x-2)

xeze [42]

Answer:

Graph y = 2x

Step-by-step explanation:

First, let's get the equation into standard form. Distribute the 2 on the right.

$y-4=2x-4$

Next, we want the variable "y" to be alone, so we at 4 to both sides.

$y-4+(4)=2x-4+(4)\\\\y=2x$

That is our equation in standard y = mx + b form. "m" is our slope, while "b" is our y-intercept. Above , we don't have a value for b, therefore the line passes through the origin.

We do, however, have a slope, which can be thought of as $\frac{rise}{run}$ or rise over run. To represent this, we can rewrite our slope as:

$y=\frac{2}{1}x$

Meaning in each interval, the line goes up by 2 units, and moves forward by 1.

3 0

3 years ago

System of equations, special case infinitely many solutions?????

Mashcka [7]

One possible system is

1x + 3y = 4

2x + 6y = 8

Note how 2 is twice as large as 1, 6 is twice as large as 3, and 8 is twice as large as 4.

In other words, the second equation is the result of multiplying both sides of the first equation by 2.

1x+3y = 4

2*(1x+3y) = 2*4

2x+6y = 8

Effectively the two equations in bold are the same which produces the same line. The two lines overlap perfectly to intersect infinitely many times. An intersection is a solution.

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3 years ago

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Minchanka [31]

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NeTakaya

Answer:

send the graph and ill solve it