Answer:
replient property
Step-by-step explanation:
so pie would be the factor
if you isolate y in the top equation to get y=5x+6 then you can substiture y for 5x+6 in the bottom equation because thats what y equals
as of now you have -3x+6(5x+6)=-12 but if you use the distrubite property you would get -3x+30x+36=-12
then if you subtract 36 from both sides you would get -3x+30x=-48 then combine like terms to get 27x=-48 then divide both sides by 27 to get or x≈1.8
The division between two numbers is positive if and only if they have the same sign. So, this fraction is positive if numerator and denominator are either both positive or both negative.
For this reason, you want to study the sign of numerator and denominator separately first.
As for the numerator, you have
Similarly, for the denominator you have
(note that we used strict inequality for the denominator, since it can't be zero).
So, the sign of the fraction works like this:
- If both numerator and denominator are negative (or, at most, the numerator is zero if ), so the ratio is greater than or equal to zero.
- If the numerator is positive and the denominator is negative (or, at most, the numerator is zero if ), so the ratio is less than or equal to zero.
- If both numerator and denominator are positive, so the ratio is greater than or equal to zero.
Answer:
5x + 20 = 5(x+4)
5(2x+8) = 10x + 40
5(x+8) =5 + 5 x 8
Step-by-step explanation:
Answer:
It will take it 1 and 1/2 hours.
Step-by-step explanation:
Because they walk 5/6 miles in 5/4 hours we can set up a proportion. They walk 1/6 miles in 1/4 hour. Now using the proportion we can find out that they walk 1 full mile or 6/6 of a mile in 6/4 hours or 1 and 1/2 of an hour.