Answer:
8z+5
Step-by-step explanation:
Let's split the expression into two terms- z and... not z :)
3z+5z=8z
Why? it's just 3+5 with z tacked on the end
14-9=5
simple math :)
put it together to get
8z+5
all done!
lmk if you have any more questions
It rotates 180 degrees because its like 90 +90+180
180+90=270
Answer: x=-2
Y= -20
Step-by-step explanation
You replace the y in the second equation with 10x. This is because it says 10x=y
2x+10x=12x so you put that
12x=-24
To get x by its self you divide by 12.
-24 divided by 12 is -2.
Now you plug in -2 to either equation as y. I chose the first one because it's easier.
10(-2)=y
-20=y
a) +17 -9 = +8 . . . a profit of $8
b) +9 -5 = +4 . . . a rise of 4 cm
c) -6 -4 = -10 . . . a drop of 10 °C
_____
Each integer has a sign chosen with respect to some reference direction. We usually choose a rise or increase or profit to be the positive direction, so a drop or decrease or loss is then represented by a negative number.
Answer:
1. 
2. x1= -2
x2= 
or 1.2
Step-by-step explanation:
