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Crazy boy [7]
2 years ago
9

1/5(x + 0.5) + 5.24 = 3/2x + 7/10(x + 2.2) Solve for x

Mathematics
1 answer:
luda_lava [24]2 years ago
6 0

Answer:

x=19/10

Step-by-step explanation:

abcdefghijklmnopqrstuvwxyz

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-2x^2+4x-1 from 6x^2+3x-9
kirza4 [7]

Answer:

8{x}^{2}  - x   - 8

Step-by-step explanation:

We want to subtract

- 2 {x}^{2}  + 4x - 1

from

6 {x}^{2}  + 3x - 9

We set up the subtracttion problem to get:

6 {x}^{2}  + 3x - 9 - ( - 2 {x}^{2}  + 4x - 1)

We expand the parenthesis to get:

6 {x}^{2}  + 3x - 9  + 2 {x}^{2}   - 4x  + 1

Group similar terms:

6 {x}^{2}   + 2 {x}^{2} + 3x- 4x  + 1 - 9

We simplify to get:

8{x}^{2}  - x   - 8

4 0
3 years ago
The ratio of the measures of the sides of a triangle is 9:15:5. If the perimeter of the triangle is 130 feet, find the measures
Alex Ar [27]
5x + 9x +15x = 130
29x = 130
x = <span> <span> <span> 4.4827586207 </span> </span> </span>
So the triangle sides =
<span> <span> <span> 22.4137931034 </span> </span> </span>
<span> <span> <span> 40.3448275862 </span> </span> </span>
<span> <span> <span> 67.2413793103 </span> </span> </span>


5 0
3 years ago
X2 - 12x -6=0<br> Complete the square
ValentinkaMS [17]

Answer:

(x - 6)^2 = 42

Step-by-step explanation:

Using " ^ " to indicate exponentiation, we have:

x^2 - 12x -6=0

Here the coefficients of this quadratic equation are a = 1, b = -12 and c = -6.

Start by taking HALF of the coefficient of x, that is, HALF of -12.  We get -6.

Next, square this result:  (-6)^2 = 36.

Finally, add this 36 to both sides, obtaining:

x^2 - 12x + 36 - 6 = 36

Rewriting the first three terms, we get:

(x - 6)^2 - 6 = 36, or

(x - 6)^2 = 42   This is the end result to "completing the square."

If you want to go further and actually solve for x, then see below:

Taking the square root of both sides, we get

x - 6 = ±√42

Then x = 6 ± √42, or

x = 6 + √42 and

x = 6 - √42

8 0
3 years ago
What is the simplest radical form of square root of 80?
Pani-rosa [81]
√(80)=√(4*20)=√(4*4*5)=4√5
7 0
3 years ago
If f(x) = 2x - 4 and g(x)= -5x + 6, then what is g(g(x))?
ki77a [65]

I guess its

25x-24

hope it helps...

7 0
3 years ago
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