Answer:
20 days
Step-by-step explanation:
It takes 12 men 5 days to complete a job. Work out how many days it would take 3 men to complete the same job.
12 * 5 = 60
60/3 = 20
It will take 3 men 20 days to do the same job
Answer:
C
Step-by-step explanation:
You basically have to get X by itself. So you subtract 2 to both sides giving you 2X = 8. Then you divide 2 to both sides give you X = 4.
Answer:
R7,200
Step-by-step explanation:
We find the new salary by multiplying the old salary by 20% and adding this value to the old salary.
Thus, we have 6,000 + (6,000 * 0.20) = 6,000 + 1,200 = R7,200
Answer:
e║f.
Step-by-step explanation:
1) the pointed vectors of the given lines are:
for line e: (3-10;5-8)=(-7;-3);
for line f: (10-3;4-1)=(7;3);
2) -7/7=-3/3=-1, it means the lines are parallel.
Answer: See below
Explanation:
(2x + 2y)(x - y) + (2x - 2y)(x+y)
= 2(x+y)(x-y) + 2(x-y)(x+y)
= 2(x^2 - y^2) + 2(x^2 - y^2)
= (2 + 2)(x^2 - y^2) (combine like terms)
= 4(x^2 - y^2)
