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Anna007 [38]
4 years ago
12

How do you solve 3/2y = 16/y+2

Mathematics
1 answer:
Lunna [17]4 years ago
3 0
First, multiply both sides by y to get rid of that y in the denominator. y(\frac{3}{2} y)= y( \frac{16}{y} + 2)

\frac{3}{2}y^2= 16+2y
Then, rearrange it to put it into standard form so you can easily see the values for a, b, and c.
\frac{3}{2}y^2 +2y +16=0
Plug into quadratic formula, and you get this result:
y= \frac{2+/- \sqrt{100} }{3}
So, y=4, y=8/3   

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Suppose the cost of mailing a letter is $0.25 per ounce plus $0.14. The equation that gives the total cost c of mailing a letter
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6 0
3 years ago
4(2x - 1) = 3x + 6 Solve for x. Show steps with sentences supporting each step.
mr Goodwill [35]

Answer:

x = 2

Step-by-step explanation:

4(2x - 1) = 3x + 6

Simplify

8x - 4 = 3x + 6

Subtract 3x from both sides

8x - 3x - 4 = 3x - 3x + 6

5x - 4 = 6

Add 4 to both sides

5x - 4 + 4 = 6 + 4

5x = 10

Divide both sides by 5

5x/5 = 10/5

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5 0
3 years ago
Read 2 more answers
One of the roots of the quadratic equation dx^2+cx+p=0 is twice the other, find the relationship between d, c and p
scZoUnD [109]

Answer:

c^2 = 9dp

Step-by-step explanation:

Given

dx^2 + cx + p = 0

Let the roots be \alpha and \beta

So:

\alpha = 2\beta

Required

Determine the relationship between d, c and p

dx^2 + cx + p = 0

Divide through by d

\frac{dx^2}{d} + \frac{cx}{d} + \frac{p}{d} = 0

x^2 + \frac{c}{d}x + \frac{p}{d} = 0

A quadratic equation has the form:

x^2 - (\alpha + \beta)x + \alpha \beta = 0

So:

x^2 - (2\beta+ \beta)x + \beta*\beta = 0

x^2 - (3\beta)x + \beta^2 = 0

So, we have:

\frac{c}{d} = -3\beta -- (1)

and

\frac{p}{d} = \beta^2 -- (2)

Make \beta the subject in (1)

\frac{c}{d} = -3\beta

\beta = -\frac{c}{3d}

Substitute \beta = -\frac{c}{3d} in (2)

\frac{p}{d} = (-\frac{c}{3d})^2

\frac{p}{d} = \frac{c^2}{9d^2}

Multiply both sides by d

d * \frac{p}{d} = \frac{c^2}{9d^2}*d

p = \frac{c^2}{9d}

Cross Multiply

9dp = c^2

or

c^2 = 9dp

Hence, the relationship between d, c and p is: c^2 = 9dp

8 0
3 years ago
Base:9.44 area=70.8 WHAT IS THE HIEGHT
Harlamova29_29 [7]
Divide

a = b * h
we know the base and area, not height

h = a/b
h = 70.8/9.44
h = 7.5

Your height is 7.5 units 
6 0
3 years ago
What is a good reasoner this help plz.
asambeis [7]

Answer: I pushed the wrong button on my computer I apologize.

Step-by-step explanation: That's the best I got.

7 0
3 years ago
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