Answer:
AD=2
Step-by-step explanation:

Answer:
1/4
Step-by-step explanation:
dy/dx(1/4x + 14)=1/4
Answer:
9x(4+8y+3y)
Step-by-step explanation:
36x+72xy+27xy
9x(4+8y+3y)
Answer:
x=60
Step-by-step explanation:
3/5x + 1/4x=51
12/20x+5/20x=51
17/20x=51
17x=1020
x=60
Double-Check:
3/5(60)+1/4(60)=51
180/5+60/4=51
36+15=51
51=51
Hope it helped!