I have a question, for the problems, are there other pictures that you didn't show? Because I'm a little confused. They keep mentioning things like "the square." I'm really sorry if it's just me. But I was just wondering.
Answer:
Step-by-step explanation:
This is a simple motion problem. Believe me, they get much harder! The distance formula is
d = rt
We want to know, basically, how long it will take this train traveling 56 mph to go 450 miles. We have the r, rate, and the d, distance:
450 = 56t so
t = 8.0
That means it will take 8 hours for the train to travel that far. If it leaves at 7 am, 8 hours after that will put it in the next town at approximately 3pm.
(-1, 1)
Find the coordinates of the intersection between the lines.
Answer: 2) 4x - 8 - 8y
Step-by-step explanation:
if xy=4
then y(x-4)(x+2) use foil method with parenthisies to get
y(x²+2x-4x-8) foil again
x²y+2xy-4xy-8y plug 4 in for xy
x²y+2(4)-4(4)-8y solve what u can
x²y+8-16-8y= x²y-8-8y
for x²y if you take out the exponent you have an xy and an x so when u plug in 4 you get 4x ending up with a solution of
4x-8-8y
Hope that helped
The expression 4x^2 represents - (4)(x)(x)
