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ELEN [110]
3 years ago
7

What is -5+10x+10x-5​

Mathematics
2 answers:
Goshia [24]3 years ago
3 0

Answer:

-10+20x

Step-by-step explanation:

-5+10x+10x-5

-5-5+20x

-10+20x

icang [17]3 years ago
3 0

Answer:

<h2>20x - 10</h2>

Step-by-step explanation:

-5 + 10x + 10x - 5

<em>combine like terms</em>

= (10x + 10x) + (-5 - 5)

= 20x - 10

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Tom determines the system of equations below has two solutions, one of which is located at the vertex of the parabola.
Rus_ich [418]

Answer:

b must equal 7 and a second solution to the system must be located at (2, 5).

Step-by-step explanation:

Rearranging the first equation:

y = (x - 3)^2 + 4

From this we see that the vertex is at the point (3,4).

So one solution of equation 2 is (3 ,4).

Substituting in equation 2:

4 = -3 + b

b = 7.

So equation 2 is y = - x + 7.

Now we check if  (2, 5) is on this line:

5 = -2 + 7 = 5 , therefore  (2, 5) is on this line.

Verifying if (2, 5)  is also on y = (x - 3)^2 + 4:

5 = (2 - 3)^2 + 4 =  1 + 4 = 5

- so it is. and a second solution to the system is (2, 5).

5 0
3 years ago
Find the greatest possible error for each measurement.
exis [7]
I think it is d I am not sure but i guess it's D
7 0
4 years ago
Help plsss . 10 points !
Irina18 [472]
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6 0
3 years ago
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One side of a triangle is 13 feet shorter than the second side. The third side is 1 feet longer than the second side. The perime
Papessa [141]

Answer:

let second side be x

then first side = x-13

third side= x+1

now

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x-13+x+x+1=45

3x=57

x=19

first side = x-13= 19-13=6

third side= x+1=19+1=20

Step-by-step explanation:

4 0
3 years ago
What is the system of equations for 2x + 2y = 10 and 5x - 2y=4?
vagabundo [1.1K]

2x  + 2y = 10 \\ 5x - 2y = 4 \\  7x = 14 \\ x = 2 \\  \\ 2(2) + 2y = 10 \\ 4 + 2y = 10 \\ 2y = 6 \\ y = 3
(2,3)
8 0
3 years ago
Read 2 more answers
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