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3 years ago

11

SCHOOL Half of the students in Max’s class volunteer at the local community center. Fifteen students do not volunteer. If there

are 12 boys in Max’s class, how many girls are in his class?

1 answer:

damaskus [11]3 years ago

6 0

18. 15 x 2 = 30, 30-12=18

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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:

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

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

5 0

3 years ago

Choose the polynomial that is written in standard form? <br><br><br> |||||Pictured|||||

Usimov [2.4K]

The 3rd one down is correct

8 0

3 years ago

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Given that 2(-x + 4)=3 prove that x=5/2

user100 [1]

Answer:

x = 5/2

Step-by-step explanation:

So firstly, you want to distribute. It'll make your life much easier.

-2x + 8 = 3

-2x = -5 (subtracting 8 from both sides)

x = 5/2 (dividing both sides by -2 to obtain x)

Hope this helps :)

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3 years ago

PLEASE HELP 100 POINTS.

aalyn [17]

Wait I don’t understand what u need

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2 years ago

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Which point on the scatter plot is an outlier?

dlinn [17]

Answer:

The point 9,50

Step-by-step explanation:

All the other ones are within a reasonable distance of each other.

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1 year ago