Answer: 1692
Step-by-step explanation:
Formula to find the sample size :
Given : Confidence level : 
⇒ significance level =
z-value for 90% confidence interval (using z-table)=
Prior estimate of the population proportion (p) of customers who keep up with regular vehicle maintenance is unknown.
Let we take p= 0.5
Margin of error : E= 2%=0.02
Now, the required sample size will be :
Simplify , we get
Hence, the required sample size = 1692
V=(1/3)hpir^2
v=(1/3)8pi12^2
v=(8/3)pi144
V=(1152/3)pi
v=384pi
pi=3.14 for this prob
v=1205.76 cm^3
1st option
Answer: The height of the cone is
Step-by-step explanation:
<u>Step 1:-</u>
using formula Volume of the cone given base and height of the cone is 
Given Volume of the cone is V = 30 ft^3
Given base of the cone is B = 8 ft^2
<u>Step 2</u>:-
substituting values, we get
cross multiplication, we get
simplification we get
<u>Final answer</u> :- The height of the cone is
Should be 11 and 6 because when you add 11 and 6 you get 17 and when you subtract them you get 5
Answer:
1. -18,-7,-4,3,16
2. -39,-24,-12,20,24
3. -64,-57,-32,0,9
4. -24,-14,-8,-3,-1
Step-by-step explanation:
Negative numbers are always least.
