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hoa [83]
3 years ago
5

What is 5x - 6 = 3x -8

Mathematics
2 answers:
geniusboy [140]3 years ago
6 0
I believe the answer is x = 1
sveta [45]3 years ago
3 0
\frac{2x}{2} = \frac{-2}{2} 

x=-15x - 6 = 3x -8

(5x - 3x) and (6+(-8))

2x = -2


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1. The height of a missile t seconds after it has been fired is given by h=4.9t^2+44.1t. How many seconds will it take for the r
asambeis [7]

Answer:

The rocket will take 4.5 seconds to reach its maximum height.

Step-by-step explanation:

The height of a missile t seconds after it has been fired is given by h=-4.9*t²+44.1*t

This function is a quadratic function of the form f (x) = a*x² + b*x + c. In this case a=-4.9, b=44.1 and c=0

To calculate how many seconds it will take for the rocket to reach its maximum height, I must calculate the maximum of the function. The maximum of a quadratic function is the vertex of the parabola. The x coordinate of the vertex will be simply: x=\frac{-b}{2*a}. The y coordinate of the vertex corresponds to the function evaluated at that point.

In this case the x coordinate of the vertex corresponds to the t coordinate. In other words, by calculating the x coordinate of the vertex, you are calculating the maximum time t it will take for the rocket to reach its maximum height. So:

t=\frac{44.1}{2*(-4.9)}

t=4.5

<u><em>The rocket will take 4.5 seconds to reach its maximum height.</em></u>

7 0
2 years ago
A=1/2f(r+z), solve for r
marin [14]

Answer:\frac{2A}{f} -2=f

Step-by-step explanation:

A=1/2(r+2)

2A=f(r+2)

2A/f=r+2

2A/f-2=r

7 0
2 years ago
1. -x=10y<br><br>2. y+8=-x<br><br>3. -4+7x+4=3y​
fiasKO [112]

Answer:

1 y=-1/10x

2 y=-x-8

3 y= 7/3x or 2 1/3x

Step-by-step explanation:

1 -x=10y

divide -x and 10 by 10

2 y+8=-x

subtract 8

3 -4+7x+4=3y

divide everything by 3

6 0
3 years ago
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ankoles [38]

Answer:

I would just guess, but if i were to actually think about it, i would think C. I hope it helps, and blame it on me if you fail.

Step-by-step explanation:

8 0
3 years ago
PLEASE HELP FIRST GETS BRAINLIEST!!!!!!!!!!!
Shalnov [3]
Four people read 6to 8 books.
7 0
3 years ago
Read 2 more answers
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