PEMDAS.
Parentheses
Exponents
Multiplication
Division
Addition
Subtraction
Lets apply that here.
72-[(3x2^3)+48]
So first we start with (3x2^3)
2^3=8
3*8=24
now we do 24+48 which equals 72
now we have 72-72 which equals zero.
So
72-[(3x2^3)+48] = 0
3 men - 4 days |divide 3
1 man - 4/3 day |multiply 2
2 men - 8/3 day
Two men would build this fence in 8/3 day.
Answer:
y=-3x-1
Step-by-step explanation:
12x+4y=-4
Slope intercept y=mx+b
Subtract 12x from both sides
4y=-4-12x
Divide each side by 4
y=-1-3x then just reorder to match slope intercept form
y=3x-1
B= 5,3
c=4,-1
a=2,1
this is the answer to part c
