Answer:
3. c 4. b 5. a
Step-by-step explanation:
i did the math
Answer:
Step-by-step explanation:
standard deviation σ =5000
Mean μ = 36500
X = 30000
Probability that tire fails to reach 30000 miles
P(< 30000) = P( z < (30000-36500) / 5000 )
= P ( z < - 1.3 )
= .0968 ( from z table )
refund per mile = .01
refund for 30000 mile = .01 x 30000 = 300
expected cost of promotion
= 300 x .0968
= 29.04
b )
refund of $50 is equivalent to shortage of milage by 50 / .01 = 5000 miles
Probability of miles less than 30000 - 5000 = 25000
P ( X < 25000 ) = P ( z < (25000 - 36500) / 5000 )
P ( z < - 2.3 )
= 0.0107 Answer .
14/15
lcd is 15 so the numbers convert to
9/15 + 5/15 = 14/15
Answer: 41 will be your answer
Step-by-step explanation:
Answer:
D. d^2 - πd^2/4.
Step-by-step explanation:
The sides of the square are equal to the diameter of the circles so the area of the square = d^2.
The shaded area = area of the square - 4 * the area of a quarter circle
= area of the square - area of 1 circle
= d^2 - π r^2
r = d/2 so
Area of the shaded part = d^2 - π (d/2)^2
= d^2 - π (d^2/4)
