Answer:
The answer is (C. 433.47) Hope this helps!!!
Step-by-step explanation:
Answer:
Are they going to build the fence on the edge of the pool? How are they going to get into the pool? This question is illogical, however....
Step-by-step explanation:
A square pool is also wierd.
Volume Pool = side × side × depth
Volume Pool / depth = side² solve for side
side² = Volume Pool / depth
the fence is 3.5 feet tall
Fencing sqft one side = side × fence height for ONE side
Total Fencing = 4 × Fencing sqft one side
side² = 3464 ft³ / 8 ft
= 422 ft²
side = √422 ft²
= 20.54 ft
Fencing area one side = 20.54 × 3.5
= 71.899 ft²
Total fencing = 4× 71.899 ft²
= 287.6 ft² to the nearest tenth <-------------------- FINAL ANSWER
The answer simplified is:
a= —2x^2+7x+22
Answer: the company should promote 4412 hours for these bulbs.
Step-by-step explanation:
Assuming that the lives of the bulbs are normally distributed, we would apply the formula for normal distribution which is expressed as
z = (x - µ)/σ
Where
x = lifetime of the bulbs in hours.
µ = mean hours
σ = standard deviation
From the information given,
µ = 4000 hours
σ = 200 hours
If only 2% burn out, then the company would promote 98% would meet the claimed lifetime. Looking at the normal distribution table, the z score corresponding to a probability of 0.98 is 2.06. Therefore,
2.06 = (x - 4000)/200
Cross multiplying, it becomes
200 × 2.06 = (x - 4000)
412 = x - 4000
x = 4000 + 412
x = 4412 hours
