Answer:
Step-by-step explanation:
let x represents amount.
Then x≥625-137
or x≥488
Answer:
f(x) = (x + 2)(x - 5)(x - 6)
Step-by-step explanation:
given the zeros of f(x) are x = a, x= b and x = c, then the factors are
(x - a), (x - b) and (x - c)
The function is then the product of the factors
f(x) = (x - a)(x - b)(x - c)
Here zeros are x = - 2, x = 5 and x = 6, thus the factors are
(x + 2), (x - 5) and (x - 6), so
f(x) = (x + 2)(x - 5)(x - 6) ← in factored form
Answer:
B. $1750
Step-by-step explanation:
The mean of the discrete uniform distribution is given by:
In this problem, we have that 
.
The expected time to find the car is:
7 hours are expected to find the car.
The helicopter costs $250 per hour to rent.
7*$250 = $1750
So the correct answer is:
B. $1750
Answer:
Step-by-step explanation:
Since 
is the same as 
and 
, then we know that the side opposite to the angle 
is 4 units and the hypotenuse is 5 units.
Because 
, then we have to find the adjacent side to the angle using the Pythagorean Theorem:
Therefore, since the adjacent side is 3 units, then
1) we calculate the area of the swimmning pool
area of this swimming pool=(22ft)(28 ftt)=616 ft².
2) we calculte the total area of the swimming pool + area of the walkway
Total area=area of the swimming pool + area of the wakway
Total area=616 ft²+336 ft²=952 ft².
3) we can suggest this equation :
x=width
(22+2x)(28+2x)=952
616+44x+56x+4x²=952
4x²+100x-336=0
x²+25x-84=0
x=[-25⁺₋√(625+366)]/2=(-25⁺₋31)/2
we have two solutions:
x₁=(-25-31)/2=-28 this solution is not valid.
x₂=(-25+31)/2=3
Answer: the width of the walkway is 3 ft.
