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OlgaM077 [116]
3 years ago
12

21/x=84/120 solve the proportion​

Mathematics
1 answer:
Nimfa-mama [501]3 years ago
3 0

Answer:  X= 30

Step-by-step explanation:

Hope that helped :)

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Which is the equation of a parabola with vertex (0, 0), that opens to the right and has a focal width of 8? a.y^2=8x b.y^2=-8x c
Marianna [84]

Answer:

a.   y^2 = 8x.

Step-by-step explanation:

The general equation for this type of parabola is y^2 = 4ax  where a is the distance between the vertex and the focus. The focal width = 4a.

So the answer to this is y^2 = 8x.

7 0
3 years ago
A box has 1 red marble, 1 blue marble, and 4 green marbles of the same shape and size. Dan draws a marble randomly from the box,
andrezito [222]
Well, he has a 4/6 or 2/3 chance of pulling a green marble. Drawing a second marble would make it another 2/3 chance. So he would have a 4/6 chance since 2/3 + 2/3 = 4/6.
4 0
4 years ago
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What is the equation of a line passing through (-6,5) and having a slope of 1/3?
nika2105 [10]

Answer:

y = (1/3)x + 7  

Step-by-step explanation:

Steps:

  (y-y1)=m(x-x1)     where m=slope

Using (x1,y1) is (-6,5):

1:  (y-5)= (1/3)(x-(-6))

2:   (y-5) = (1/3)(x+6)

3:     y-5 = (1/3)x + 2           Distribute

4:  y = (1/3)x + 7             Add 5 to both sides

<em><u>Hope this helps.</u></em>

6 0
3 years ago
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If 3 tons of flower bed mulch cost $480, what is the price per pound?
Goshia [24]
1 ton = 2,000 pounds 
3 tons = 6,000 pounds
$480/6,000 = 0.08 
per pound is $0.08
6 0
3 years ago
I need help plz.
viva [34]

Answer:

slope = \frac{1}{2}

Step-by-step explanation:

Calculate the slope m using the slope formula

m = \frac{y_{2}-y_{1}  }{x_{2}-x_{1}  }

with (x₁, y₁ ) = (- 8, 0) and (x₂, y₂ ) = (4, 6) ← 2 points on the line

m = \frac{6-0}{4+8} = \frac{6}{12} = \frac{1}{2}

8 0
4 years ago
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