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3 years ago

What is an equation

2 answers:

5 0

A mathematical equation is an expression containing at least one variable and an equals sign with a mathematical expression on each side of it.

marissa [1.9K]3 years ago

3 0

Answer:

hello :

Step-by-step explanation:

exempls :

x+1 =2

x/2 = 4

x²+x+3 =0

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A roped-off area of width x is created around a 30- by 10-foot rectangular museum display of Native American artifacts. The comb

Monica [59]

Answer: $4x^{2}+80x-500=0$

Step-by-step explanation:

1. You know that:

- The roped-off area whose width is represented with <em>x,</em> it is created around a rectangular museum.

- The dimensions of the rectangular museum are: 30 ft by 10 ft.

- The combined area of the display and the roped-off area is 800 ft².

2. The area of the rectangular museum can be calculated with:

$A=l*w$

Where $l$ is the lenght and $w$ is the width.

You have that the lenght and the width in feet are:

$l=30\\w=10$

3. Let's call $x$ the width of the roped-off area. Then, the combined area is:

$A_c=l_c*w_c$

Where

$A_c=800$

$l_c=l+x+x=30+2x$

$w_c=w+x+x=10+2x$

4. Substitute values and simplify. Then:

$800=(30+2x)(10+2x)$

$800=300+60x+20x+4x^{2}\\4x^{2}+80x-500=0$

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4 years ago

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Nookie1986 [14]

Answer:

option 4

Step-by-step explanation:

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GaryK [48]

I know one of them is 1/2

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3 years ago

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Y_Kistochka [10]

Answer:

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Step-by-step explanation:

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nataly862011 [7]

Idk I just put wtv ha see youuuu

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3 years ago

What is an equation ​

What is an equation