Answer:
i belive that x= -7
Step-by-step explanation:
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Answer:
y = 15(x -10)^2 -1560
Step-by-step explanation:
It usually works well to divide the leading coefficient from the x terms:
y = 15(x^2 -20x) -60
Now, add the square of half the x-coefficient inside parentheses. Subtract the same amount outside.
y = 15(x^2 -20x +100) -60 -(15)(100)
y = 15(x -10)^2 -1560 . . . . . collect terms; write the parentheses as a square
The population of the bacteria after 40 hours is 207 after 40 hours?
The perimeter formula here is P = 2W + 2L.
In this situation P = 32 ft = 2(3W-4) + 2W, or 32 ft = 6W - 8 + 2W, or
32 ft = 8W - 8.
Solve this for W by adding 8 to both sides of the equation:
40 ft = 8W. Then W = 5 ft, and L = 3(5 ft) - 4 ft = 11 ft.
Note that P = 2(5 ft) + 2(11 ft) comes out to (10 + 22) ft, or 32 ft, as was given.
Answer: 84 minutes
Step-by-step explanation:
See paper attached. (: