Answer:
y+6.75
Step-by-step explanation:
Answer: y+6.75
Follow Order of Operations
y+9*3/4
9*3/4 = 6.75
y+6.75
Like terms:
1.4c, -2c, -7.3c
11.4 has no like terms
Area of one blade is
A=(1/2)b*h=(1/2)7*4=28/2=14
for four blades
14*4=56
8.2*10^-5 can be also written as 0.000082, in standard notation.
Hope this helps.
