Answer:
D
Step-by-step explanation:
So lets do it like this:
z = (X-Mean)/SD
<span>z1 = (8-12)/2 = - 2 </span>
<span>z2 = (16-12)/2 = + 2 </span>
<span>According to the Empirical Rule 68-95-99.7 </span>
<span>Mean more or less 2SD covers 95% of the values </span>
So t<span>he percentage of data points falling between 8 and 16 = 95%
</span>I hope this can help
Answer:
174
Step-by-step explanation:
L = 68
W=19
Use the formula given:
2 x 68 + 2 x 19 = 174
Answer: Rs. 100
Step-by-step explanation:
Given the following :
Total expenditure for dance show = Rs. 25000
Profit made except expenditure = Rs. 12,000
Number of people who observed and paid for the show = 370
Amount paid per person will be :
(Total amount or revenue realized / number of observers who paid)
Total revenue realized = (total expenditure + profit made)
Total Revenue realized = Rs.(25,000 + 12,000) = Rs. 37,000
Amount paid per observer = (Rs. 37,000 / 370)
= Rs. 100
Short Answer B
Argument
A
A will give you x = +/- 5i
x^2 + 25 = 0
x^2 = - 25 Take the square root.
sqrt(x^2) = +/- sqrt(-25)
x = +/- (5)i which is a complex number.
B
Is the answer
x^2 = 25
sqrt(x)^2 = sqrt(25)
x = +/- 5
C
Can't be factored just by looking at it. You can show that C is not true just by putting 5 into the equation
f(x) = x^2 + 10x - 25
f(5) = 25 + 10*5 - 25
f(5) = 50
C is not true.
D
D can be eliminated as C was
f(x) = x^2 - 5x - 25
f(5) = -25 ( l'll let you show this is not true). 5 is not a solution because it does not make f(x) = 0
