Answer:
B= 4.6cm
Step-by-step explanation:
A=
Answer:
7
Step-by-step explanation:
Let x stand for the unknown number
(4+5)+3=(2+3)+x
First, solve the numbers in paratheses,
(4+5)+3=(2+3)+
9+3=5+x
Then combine like terms
12=5+x
Finally, subtract 5 from both sides
12-5=5-5+x
7=x, therefore 7 makes the statement true.
Answer:
y=(-3/5)x
Step-by-step explanation:
5x-3y=20
-3y=-5x+20
y=(5/3)x-(20/3)
perpendicular lines have opposite reciprocal slopes