Pre-Algebra
DUE URGENTLY
mathematics

15 pts

-8x - 8 is the only expression equivalent to 16x - 12 - 24x + 4

Step-by-step explanation:

The easiest way you can do this problem is by substituting any number for x, for all of the expressions. That way you can compare the expressions. Let's choose to use 1 for example. So, x = 1.

If x = 1, you plug 1 in for all the x's. So, 16x - 12 - 24x + 4 would look like

16(1) - 12 - 24(1) + 4 = -16. Now let's see if any of the other expressions would ALSO equal -16 if x = 1.

4 + 16(1) - 12(1 + 2(1)) = 6

40(1) - 16 = 24

16(1) - 24(1) - 4 + 12 = 0

-8(1) - 8 = -16

Therefore, -8x - 8 is the only equivalent expression :)

The answer is -8x - 8  hope this will help you.

she will sew have sewn five dresses   and be 1/3 done with the sixth one in an hour.

step-by-step explanation:

3/4 of an hour=45 mins

lucy makes 1 dress per 11.25 minutes

45 mins+11.25 mins=56.25 mins

60 mins- 56.25 mins=3.75 mins

3.75 mins is 1/3 of of 11.25 mins

therefore she the other 1/3 would be part of the hour and she will have sewn 5 dresses and begun the sixth.

contact me if you have any questions you are welcome.