Answer:
The selling price is 3/2 of the original price
Step-by-step explanation:
Let his original money is x
So,

+

+ 2.25 = x
or,

or, 5x + 13.5 = 6x
or, x = 13.5
So, he had $13.5 originaly.
Thanks!
The standard deviation of the population function is 2
<h3>How to determine the standard deviation?</h3>
The given parameters are:
M(x) = 2
M(x²)=8
The standard deviation is calculated using:

Substitute known values

Evaluate the expression

Hence, the standard deviation of the population function is 2
Read more about standard deviation at:
brainly.com/question/15858152
#SPJ1
Answer:
D -24/25
Step-by-step explanation:
sin(2x) = 2sin(x)cos(x)
cos(x) = ⅘
sin²(x) = 1 - cos²(x) = 1 - (⅘)²
sin²(x) = 9/25
sin(x) = -⅗
(Because 4th quadrant)
sin(2x) = 2(-⅗)(⅘)
= -24/25
Answer:
-4
Step-by-step explanation:
I got it wrong and it showed me the answer.