Answer:
57
Step-by-step explanation:
Given that :
Standard deviation (σ) = 5 minutes = (5 *60) = 300 seconds
Margin of Error, E = 78
Assume a confidence interval of 95%;
Using the relation :
((Zα/2 * σ) / E)²
(1 - α)/2 = (1 - 0.95)/2 = 0.05 /2 = 0.025
Z0.025 = 1.96
Sample size = ((1.96 * 300) / 78)²
Sample size = (588 / 78)^2
Sample size = 7.5384615^2
Sample size = 56.828
= 57 samples
8.902
^this place it the hundreths so if you know how to round it is 8.9 or 8.900
Simple...
you have:
1.) -8x-16 --->>>
Factor out a -8 -->>
-8(x+2)
2.)9d+15db --->
Factor out 3d -->
3d(3+5b)
3.) 2a-9ax-->>
Factor out -a -->
-1a(9x-2)
Thus, your answer.
Answer:
If the television is on sale for 15%, that means that the selling price before tax will be 100 - 15 = 5% of the original price.
1250 * 0.85 = $1062.5 ... this is your selling price BEFORE tax
Now, calculate your tax.
You would pay (1062.5) + (1062.5 * 0.065)
= 1062.5 + 69.06 (your tax)
= 1131.56 dollars
Step-by-step explanation:
From the graphs you can see that the graph of the line
lies under the graph of the line
. Then all solutions of unequality
are solutions of unequality
, but not all solutions of unequality
are solutions of unequality
.
For example, if x=1, y=-2
.
Answer: Correct choice is B.
