Answer:
Continuous
Step-by-step explanation:
There is never a period of time when the water's flowing halts because the opening and closing of the first and second pipe are overlapping. Hope this helps (:
Answer:
Step-by-step explanation:
R = 9x + 8y
4 = 9x + 8*8
4 = 9x + 64
Subtract 64 from both sides
4 - 64 = 9x + 64 - 64
-60 = 9x
Divide both sides by 9
-60/9 = 9x/9
-20/3 = x
x = -6 2/3
Answer:
The answer is given below
Step-by-step explanation:
The question is not complete. The correct question is:
A square based pyramid have a height of 30 cm and base of 10 cm. The The square based pyramid is cut horizontally at a height of 15cm to leave this frustum.
Answer:
The frustum would have a base of 10 cm and height of 15 cm. The lower base has a length of 10 cm. to calculate the upper base, we use the formula:
Substituting:
The volume of the frustum is given by the formula:
Where h is the height of the frustum = 15 cm, A1 is the area of the lower base = 10 * 10 = 100 cm², A1 is the area of the upper base = 5 * 5 = 25 cm²
Substituting gives:
Because of the "x-5" in the absolute value, the pieces will separate at x=5, because that's where x-5 = 0.
(This knocks out answer #1, 3, and 4)
To confirm option #2 is correct:
If you pick a number greater than 5, the absolute value doesn't do anything, so
if x > 5, a(x) = (x-5) + 1
If you pick a number less than 5, "x-5" is negative and the absolute value gives you the opposite of that value:
if x < 5, a(x) = - (x-5) +1
The answer is the second option.
