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kvv77 [185]
3 years ago
4

Which are steps in the process of completing the square used to solve the equation 3 – 4x = 5x2 – 14x? Check all that apply 3 =

5(x2 + 2x) 3 = 5x2 – 10x 4 = 5(x2 – 2x + 1) 8 = 5(x2 – 2x + 1) 3 = 5(x – 1)2 4 = 5(x – 1)2 StartFraction 8 Over 5 EndFraction = (x – 1)2
Mathematics
2 answers:
faust18 [17]3 years ago
5 0

Answer:

1. 3 = 5x2 – 10x

2. 8 = 5(x2 – 2x + 1)

3. StartFraction 8 Over 5 EndFraction = (x – 1)2

Step-by-step explanation:

3-4x=5x^2-14x

3=5x^2-14x+4x

3=5x^2-10x

5x^2-10x-3=0

1. 3 = 5x2 – 10x

2. 8 = 5(x2 – 2x + 1)

8=5x^2-10x+5

8-5=5x^2-10x

3=5x^2-10x

3. StartFraction 8 Over 5 EndFraction = (x – 1)2

8/5=x^2-2x+1

Cross product

8=5(x^2-2x+1)

8=5x^2-10x+5

8-5=5x^2-10x

3=5x^2-10x

mash [69]3 years ago
5 0

Answer:

2,4,7

Step-by-step explanation:

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VikaD [51]

Answer:

root3/ root2

Step-by-step explanation:

since this is a special right triangle (45, 45, 90) we can use right triangle rules. Basically, C in my photo is equal to the hypotenuse while A and B are equal to the sides. You can substitute your hypotenuse into the formula I gave you to find x.

B = C / root2

x = root3 / root2

hope this helped a little bit

7 0
3 years ago
A company that makes​ hair-care products had 200 people try a new shampoo. Of the 200 ​people, 12 had a mild allergic reaction.
Likurg_2 [28]

Answer:

24

Step-by-step explanation:

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7 0
3 years ago
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gregori [183]
Add and subtract the second term to the expression and factor by grouping.
4k(y-1)(3y+5)
7 0
3 years ago
Two points are located on a rigid wheel that is rotating with an increasing angular velocity about a fixed axis. The axis is per
exis [7]

Answer:

Same angular velocity

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Point 1 has greater tangential acceleration

Point 1 has greater centripetal acceleration

Step-by-step explanation:

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The tangential quantities, however, would depend on how far they are from the axis of rotation:

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5 0
4 years ago
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Degger [83]

Answer:

  500 cm³

Step-by-step explanation:

Using the given values in the given formula, we find the volume to be ...

  V=\dfrac{4}{3}\pi r^3\\\\V=\dfrac{4}{3}(3)(5\text{ cm})^3 = 4(125\text{ cm}^3) = \boxed{500\text{ cm}^3}

The volume of the sphere is about 500 cubic centimeters.

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<em>Additional comment</em>

The actual value of pi would add about 4.72% to this figure, bringing the estimate to about 523.6 cm³.

8 0
2 years ago
Read 2 more answers
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