Answer: I think 28 miles
Step-by-step explanation:
you add 8 miles every 2 hours until you reach 9 hours and since 9 is an old number you add 4 instead.
You solve this by plugging one equation into the other. Usually you have to rewrite one equation to make this work. In this case I choose to rewrite y-4x=0 as y=4x.
After plugging it into the second, you get:
3x + 6*4x = 9 => 27x = 9 => x=1/3
Putting this solution back into y=4x gives us y=4/3
Answer:
for the first graph for the side of y it's five
Step-by-step explanation:
because no matter what numbers it is the difference is 5
A=LW and we wish to increase L and W by the same amount to get an area of 192m^2.
(9+2x)(13+2x)=192
117+18x+26x+4x^2=192
4x^2+44x+117=192
4x^2+44x=75
x^2+11x=18.75
(x+5.5)^2=30.25+18.75
(x+5.5)^2=49
x+5.5=±7
x=-5.5±7, since x>0
x=1.5
13+2(1.5)
16 meters will be the new longer dimension.
(2y)(2y)(2y)(2y). 2y to the fourth power is the same as saying 2y 4 times or 2y times 4
