Answer:
pi + -pi = 0
Step-by-step explanation:
We need to have irrational numbers that we are adding and end up with a rational number. This means that it is not closed under addition
pi is an irrational number
0 is a rational number
pi + -pi = 0
irrational + irrational = rational
Answer:
h = 3.5 in
Step-by-step explanation:
The formula for the volume of a square pyramid is
V = (1/3)(area of base)(height).
Here the base area is (7 in)², or 49 in², and the volume is 171.5 in³.
Substituting these values into the formula above yields:
171.5 in³ = (49 in²)(h), so that
171.5 in³
h = ---------------- = 3.5 in
49 in²
Answer:
$515.35
Step-by-step explanation:
y-hat = 2.009x - 37.131
y-hat = 2.009(275) - 37.131
y-hat = 552.475 - 37.131
y-hat = 515.344
Therefore, the pizza parlor can expect a profit of $515.35 if it sells 275 pizzas.
Answer:
1/5 (x-3)
Step-by-step explanation:
1/5x -3/5
1/5 (x-3)
Answer:
x = 2±3sqrt(3)
Step-by-step explanation:
(x-2)^2/3=9
Multiply each side by 3
(x-2)^2/3 *3=9*3
(x-2)^2=27
Take the square root of each side
sqrt( (x-2)^2)=±sqrt(27)
x-2 = ±3sqrt(3)
Add 2 to each side
x = 2±3sqrt(3)
