Completely factor

Convert 11 cm to mm. A : 11 mm B : 0.11 mm C : 110 mm D : 11,000 mm

DochEvi [55]

It would be c because 1 cm. is equal to 10 mm

8 0

4 years ago

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Verizon [17]

Answer:

see explanation

Step-by-step explanation:

32 - 7x = 2x - 3(4x - 5) ← distribute parenthesis

32 - 7x = 2x - 12x + 15

32 - 7x = - 10x + 15 ( add 7x to both sides )

Anna made her error here in that she subtracted 7x from both sides

32 = - 3x + 15 ( subtract 15 from both sides )

17 = - 3x ( divide both sides by - 3 )

- $\frac{17}{3}$ = x ← is the solution

3 0

3 years ago

I’m confused on how to find x. Can someone help me on this worksheet please ASAP!?

igor_vitrenko [27]

9514 1404 393

Answer:

x=2 (work is correct)
x=4
x=44
x=4
x=any number
impossible; no such number

Step-by-step explanation:

1. The equation is ...

3x +5 = 11

3x = 11 -5 = 6

x = 6/3 = 2 . . . . matches the work shown

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2. The equation is ...

(x +2)·5 = 30

x +2 = 30/5 = 6

x = 6 -2 = 4

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3. The equation is ...

(x/2) +2 = 24 . . . . matches the work shown

x/2 = 24 -2 = 22

x = 22·2 = 44

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4. The equation is ...

2x +8 = x +12

2x = x + 12 -8 = x +4

2x -x = x -x +4

x = 4

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5. The equation is ...

2x +4 -x -3 = x +1

x +1 = x +1 . . . . . true for any value of x

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6. The equation is ...

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

x +6 = x +3 . . . . . not true for any number

_____

Additional comment

The work shown is correct. You find x by writing and solving an appropriate equation. To solve the equation, undo the steps that are done to x. Undo addition by adding the opposite. Undo multiplication by diving by the multiplier. It often helps to collect terms before you start the "undo" steps.

For x on both sides of the equation (as in problems 4–6), you can subtract the term with the lowest coefficient. (Of course, you must subtract it from both sides of the equation.) In problem 5, if you do that, you get 1=1, which is true for any value of x. In problem 6, if you do that, you get 6=3, a false equation, indicating no value of x will make it true.