Answer:
42.5units^2
Step-by-step explanation:
Area of a trapezium=1/2 *(a+b) height.
a=5 units
b=12units
height=5units
Area=1/2*(5+12)*5
Area=1/2*17*5
Area=1/2*85
Area=42.5units^2
Answer:
Opens upward
Step-by-step explanation:
Since the coefficient of 
is a positive number +8, then it is a parabola that opens upward
Answer:
It approximately dropped 0.027777 per hour.
Step-by-step explanation:
First, we calculate the decrease.
Decrease = 11/40 = 0.275
Then, we calculate the time interval.
From 10 pm to 7:54 hours will be 9.54 hours
Time interval= (9 + 54/60) hours
Time interval=9.9 hours
Finally, we calculate how much it dropped each hour
0.275/9.9 ≈ 0.027777
So it approximately dropped 0.027777 per hour.
Density = 2 Volume = 4cm cubed
29 (final) - 25 (starting) = 4 which is your volume
Density is M / V
Mass is 8
8 / 4 = 2
The silly putty's density is 2
