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Virty [35]
3 years ago
14

57% people ordered steak. 120 did not. how many customers were there that night?

Mathematics
1 answer:
jok3333 [9.3K]3 years ago
4 0
X - number of customers

120+57\%x=x\\
120+0.57x=x\\
0.43x=120\\
x\approx297.07

There can't be a fraction of the number of people, so there must be some mistake in the question.
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Solve for y: 6x-2y=-8
Stella [2.4K]
<span>6x-2y=-8
-2y =-6x-8
y = 3x+4

y= 3x+4</span>
4 0
3 years ago
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An 8ft length of crown molding costs $12. How much will it cost to buy 40 ft of crown molding?​
zzz [600]

Answer:

$60

Step-by-step explanation:

12/8 = x/40

40(12/8) = x

60 = x

8 0
2 years ago
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Solve this quadratic equation by completing the square.
nadya68 [22]

Answer:

x=-3+\sqrt{27}\\  x=-3-\sqrt{27}

Step-by-step explanation:

Let's find our C value for the quadratic equation.

(\frac{6}{2})^{2} = 9

That is our C. Since we added 9 to one side, we have to do the same to the other. We get:

x^{2} +6x + 9 = 18 + 9\\x^{2} +6x + 9 = 27

Now, lets form the left side as a binomial squared.

(x+3)^{2} = 27

Let's square both sides now:

x+3 = (+/-)\sqrt{27}

Now, we subtract 3 from both sides to isolate the variable, X:

x= -3(+/-)\sqrt{27}

This means that the answers are:

x=-3+\sqrt{27}\\  x=-3-\sqrt{27}

I do not understand your answers though. Answer A makes no sense, answer B is 221, answer C is 115, and answer D also does not make sense. If you could clarify this portion, maybe I can help you find your alphabetic answer

3 0
3 years ago
You cut a circular hole 1/4 -inch in diameter in a piece of cardboard. With the cardboard 30 inches from your face, the Moon fit
Stolb23 [73]

Answer:

The Moon's diameter is greater than 1,500 miles

Step-by-step explanation:

we know that

1\ mile=63,360\ inches

1,500\ miles=1,500*63,360=95,040,000\ inches

240,000\ miles=240,000*63,360=15,206,400,000\ inches

by proportion

Find the Moon's diameter

Let

x-----> the Moon's diameter in inches

\frac{x}{15,206,400,000}=\frac{0.25}{30}\\ \\x= 15,206,400,000*0.25/30\\ \\x=126,720,000\ inches

Compare

126,720,000\ inches> 95,040,000\ inches

therefore

The Moon's diameter is greater than 1,500 miles

3 0
3 years ago
Find the area of the triangle
elixir [45]

Answer: The area of the triangle is 252 :)

Step-by-step explanation:

M = 6

L = 6

K = 7

6 x 6 = 36 x 7 = 252

The area of the triangle is 252 :)

5 0
2 years ago
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