The way that you perceive something<span />
I’m pretty sure it’s 86, because you need to subtract 2 from the first side then you have 86 = X
-x+xy +4xy-x2
-2x2+5xy
C.-2x2+5xy
Answer:
756 hellos
Step-by-step explanation:
Each 28 persons say hello once to every 27 persons
So, 28 × 27= 756
Okay, so total dogs are 49.
So we know if x=large dogs and y=small dogs, then x+y=49.
Next we are told that there are 36 MORE small dogs than large dogs. We can take that more meaning addition, and x being our value for large dogs. So y=x+36.
After that we now know what value we can plug in for y. So x+x+36=49.
We can then simplify it to 2x+36=49.
Subtracting the 36 from both sides, leaves you with 2x=13.
Followed by dividing both sides by 2, gives you x=6.5. Or 6.5 large dogs.
Now we can plug this into our formula for the small dogs (y=x+36) to give us y=6.5+36, which simplifies to y=42.5. Or 42.5 small dogs. Which is our answer.
We can double check it by adding the small and large dogs together, 6.5+42.5, which gives us 49, our total entries.
