His error was that since it is a rectangular pyramid, he forgot to divide his answer by 3. When you divide by 3, the correct answer is 1,656 cubic meters.
<span>3[-x+(2x+1)]=x-1
</span><span>3[x+1]=x-1
3x + 3 = x -1
3x - x = -1 -3
2x = -4
x = -4/2
x = -2</span>
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Answer:
Step-by-step explanation:
Answer:
A) The height of the water increases 2 inches per minute.
Step-by-step explanation:
Slope is the rate of change of height
m = (16 - 12)/(4 - 2) = 4/2 = 2
2 inch per min
Positive slope implies increase
Let x = the number of hours since 5 a.m.
Let y = temperature, °F
Let the total temperature change be modeled by the expression
y = ax + b
At 5 a.m., x = 0 and y = -9.4°F. Therefore
b = -9.4
When x = 6 hours, y = 2.8°F. Therefore
6a + b = 2.8
6a - 9.4 = 2.8
6a = 12.2
a = 2.0333
The expression is
y = 2.0333x - 9.4
Answer:
y = 2.0333x - 9.4
where
x = hours since 5 a.m.
y = temperature, °F
