Answer:
No solutions
Step-by-step explanation:
-3x-9=-3x-11
-3x and -3x cancel each other out
-9=-11
False
I recommend getting DESMOS graphing calculator for this sort of problem ;)
No because if you plug in 4 for x and 5 for y you get -4 not 36
Answer:
$705.79.
Step-by-step explanation:
The formula is
Amount = P(1 + r/100) ^ t so
Amount = 500 (1 + 9/100)^4
= $705.79.
16.5 degrees below the starting temp, whatever that is. If its 0, then -16.5 degrees.
The first equation would be (.5)5-11=-8.5, because the metal has been cooling for 5 hours.
The device that 'aids' in the cooling would be -5-3=-8, because it is a separate variable that cools the metal, so the amount the device cools is independent of the natural cooling amount, and the equation is independent of the natural cooling equation.
You then add -8.5 and -8, because the device has lowered 8.5 degrees and 8 degrees. This equals -16.5 degrees, or a decrease of 16.5 degrees.
Speed = distance / time
speed = 135/3 = 45 miles per hr <==
