2x+y=4 2·6+(−8)=?4
12−8=?4
4=4
What do you substitute for x and y in the first equation?

Substitute 6 for x and −8 for y in the first equation.

Perform the multiplication first.
When the left side of the equation is simplified, a true statement results.

x+3y=−20
6+3·(−8)=?−20

6−24=?−20
−18≠−20
What do you substitute for x and y in the second equation?

Substitute 6 for x and −8 for y in the second equation.

Perform the multiplication first.
When the left side of the equation is simplified, a false statement results.

24/56=hx^7

step-by-step explanation:

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step-by-step explanation:

sdfghjkl; vbnm,

the surface area is 124cm²

step-by-step explanation:

length: 4cm

width: 9cm

height:   2cm

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.