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andreev551 [17]
3 years ago
10

2x(x-1) as a product and as a sum.

Mathematics
2 answers:
cupoosta [38]3 years ago
8 0

2x (x -1)

= (2x)(x+ -1)

= (2x(x) + (2x)(-1)

= 2x -2

now this part im not sure about but try this:

x + x - 1 - 1

Sladkaya [172]3 years ago
3 0
The answer is 0. 2x-2x=0

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Find the equation of the line. A line that is perpendicular to the graph of 3x +2y =6 and contains the point (6,-3)
aniked [119]

9514 1404 393

Answer:

  2x -3y = 21

Step-by-step explanation:

The perpendicular line will have an equation with the x- and y-coefficients swapped and one of them negated. The constant will be the value that makes the equation true at the given point.

  3x +2y = 6 . . . . . given equation

  2x -3y = c . . . . . . coefficients swapped, one negated

  2(6) -3(-3) = c = 21 . . . . . the value of c for the given point

The desired equation is ...

  2x -3y = 21

6 0
3 years ago
The sum of 4 times a number and -3 added to 9 times the number
Phoenix [80]

Answer:

The sum of 4 times a number and -3 added to 9 times the number is:

4x + (-3 + 9x)

Step-by-step explanation:

Determine what each of the words means

"the sum of" - you are going to be adding the following two numbers.

"4 times a number" - Let x be the number, so, 4x is the first number.

"and -3 added to" - again, it's going to be addition of this number and the following number.

"9 times the number" - let x be the number, so, 9x is the second number in the second addition.

Now that we know what it all means, put it together:

4x + (-3 + 9x)


I really hope this helps you =)

5 0
3 years ago
Find the value of x to the nearest degree.
bazaltina [42]
I believe it’s D sorry if I’m wrong
6 0
3 years ago
-3x+5y=4 and x+y=-4 find the value of x and y
shusha [124]

Answer:

x = -3, y = -1

Step-by-step explanation:

Solve by substitution:

First make the second equation in terms of y:

y = -x-4

Next, since we found what y is, plug it into the first equation and solve for x:

-3x + 5(-x-4) = 4                             Plug in

-3x - 5x - 20 = 4                            Distribute

-8x - 20 = 4                                   Simplify

-8x = 24

x = -3

We have found that x = -3. To find y we need to plug x back into any of the equations. Let's do equation #2.

(-3) + y = -4                                    Plug in

y = -1                                              Simplify

So, y = -1 and x = -3. Let's check this in the first equation to make sure it is correct:

-3(-3)+ 5(-1) = 4                              Plug in

9 + (-5) = 4                                    Simplify

9 - 5 = 4

4 = 4

Since both sides are equal that means we are correct!

Hope this helps!!

6 0
3 years ago
Refer to the image, please.
viva [34]

Answer:

7

Step-by-step explanation:

140*.60, 140*.55

=84       -      77 = 7

5 0
3 years ago
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