To subtract fractions, we need a common denominator.

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the common denominator will be (y-2)(y+3)



The answer above will be the simplified form.
It's 15 because
3 groups and 5 people in each group
and becomes 15
I HOPE THIS HELPS
Answer: ratio:14:20 work:7*2=14 10*2=20 ratio:21:30 work: 7*3=21 10*3=30 ratio:28:40 work:7*8=28 10*4=40
Step-by-step explanation: Just multiply the number on the left and right side of the ration by the same number to get an equivalent ratio. I gave some examples above. I hoped this helped.
Answer:
Option B) (7x+4)(7x+4) is correct
The product result in a perfect square trinomial is

Step-by-step explanation:
( using
)
( using
)


Therefore 
which is a perfect square trinomial
A trinomial is a perfect square trinomial if it can be factored into a binomial multiplied to itself. In a perfect square trinomial, two terms will be perfect squares.
Option B) (7x+4)(7x+4) is correct
The product result in a perfect square trinomial is

It realistically could be any number based on the person but the most likely answer is 40 hours.