Written as a simplified polynomial in standard form, what is the result when
1 answer:
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Answer:
they work together, it will take 2.4 hours to build the wall.
Step-by-step explanation:
One bricklayer can build a wall in 6 hours.
One hour work =
Another bricklayer can build the same wall in 4 hours.
One hour work =
They can together, how long will take them to build the wall.
Let's take "t" the time taken to build the wall.
The sum of their work rate = 1 (To build the wall)
Now we have to solve this equation. Take LCD of 6 and 4.
The LCD (least common divisor) of 6 and 4 is 12.
5t = 12*1
5t = 12
Dividing both sides by 5, we get
t =
t = 2.4 hours.
So, they work together, it will take 2.4 hours to build the wall.
Answer:
B (for question 7)
Step-by-step explanation:
To find the slope, we use the equation .
m = (-4+1)/(7+2) = -3/9 = -1/3
Since B is the only option that would give a slope of -1/3, B must be the answer.
(you can use this same method for question 8)