They are parallel and if you have more questions like this a good website to help you answer desmos graphing calculator
y = - 4
collect terms in x
xy + 4x = 1 - 20 = - 19 ( factor out x )
x(y + 4 ) = - 19 ( divide both sides by ( y + 4) )
x =
x will be undefined if the denominator of the fraction is zero
y + 4 = 0 ⇒ y = - 4
x has no solution for y = - 4
Close rectangular box has three couples of identical parallel faces.
there are two faces 6''×5'',
two faces 6''×3''
and two faces 5''×3''
So, the area of the box would be the total of the areas of the faces:
A = 2· 6·5 + 2· 6·3 + 2· 5·3 = 2·30 + 2·18 + 2·15 = 60 + 36 + 30 = 126 [square inches]
He started at 418 above sea level. descended means he moved down so subtract 88 from 418:
418 - 88 = 330 feet.
He then climbed 120, so now add that to the 330:
330 + 120 = 450
He is now at 450 feet above sea level.
The number is negative 23