a>82 is 42 degrees warmer than 40.
Answer:
-35-18x
Step-by-step explanation:
just calculate the difference
-35-20x+2x
-35-18x
Answer: y = -5(x+1)^2+20
Step-by-step explanation: I haven't done any math in a long time so take this with a grain of salt but they were equivalent on the calculator.
Let P = the combined perimeter for the rectangle and square.
P = rectangle + triangle
P = 2(2x) + 2(x - 3) + x + x - 2 + x + 4
P = 4x + 2x - 6 + 3x - 2 + 4
P = 9x - 8 + 4
P = 9x - 4
Speed of student A is 180 ft/min
Speed of student B is 120 ft/min
Relative speed=(120+180)=300 ft/min
Distance between them is 2420 ft
Time taken for them to meet will be:
time=distance/speed
=(2420-20)/300
=8 min
