First, set up the percent proportion, cross multiply and divide. Finally, subtract the answer you get from the original number.
You should get, $1,425.50.
Currently, the standard deviation is 10, because on average the cards were $10 away from the mean.
Adding another card with value $25 would decrease the standard deviation because it is closer to the mean the the current standard deviation.
(5x + 10) / (x + 2) * 2x / (4x - 10)
= 5(x + 2) / (x + 2) * 2x / 2 (2x - 5)
= 5 *2 = 2x / (2x - 5)
= 10 * (2x - 5) = 2x
= 20x - 50 = 2x
= 20x - 2x = 50
= x = 50 / 18
In short, Your Answer would be 25/9
Hope this helps!
The correct product of (6x+2)2 = 36x2 + 24x + 4
This is how to get this:
The equation is (a+b)2 = (a+b) (a+b). So, when you apply this to your equation, you get this:
(6x+2)2 = (6x+2) (6x+2) = 36x2 + 12x + 12x + 4 = 36x2 + 24x + 4
Answer:
Commutative property of multiplication
Step-by-step explanation:
This property states that numbers can be switched around when multiplying and the answer still remains the same
