2x+8x=30. x= #of pens
10x=30. combine like terms
x=3. divide by 10 to isolate (get by itself) x
2(3)=6. the # of white pens are represented by 2x
6 white pens
hope this helped!
Answer:
I have no idea sorry
Step-by-step explanation:
Answer:
see graph...
B On a coordinate plane, a line goes through (0, 0) and (1, negative 4).
Step-by-step explanation:
Answer:
5.6 meters
Step-by-step explanation:
V = pi r^2 h
We want to solve for h
Divide each side by pi r^2
V/ pi r^2 = pi r^2 h/ pi r^2
V/ pi r^2 =h
We know v = 440 pi = 22/7 and r = 5
440 / ( 22/7 * 5^2) = h
440 / (22*25/7) = h
440*7/550 = h
5.6 = h