Answer: Letter Choice ( B): -x^2 - 4x + 7
Step-by-step explanation:
( 4x^2 - 7x + 9 ) - ( 5x^2 - 3x + 2 )
Remove Parentheses: (a) = a
4x^2 - 7x + 9 - ( 5x^2 - 3x + 2 )
- ( 5x^2 - 3x + 2 ): - 5x^2 + 3x - 2
Simplify:
4x^2 - 7x + 9 - 5x^2 + 3x - 2
Answer:
Letter Choice ( B ):
-X^2 - 4x + 7
Hope That Helps!
To decide which one is the better deal, you need to compare them on price per ear. So, the the first vendor is $2.56/8ears= $0.32/ear
the second vendor: $4.32/12 = $0.36/ear
The first vendor with the bag of 8 ears is the better deal!
The product of the slopes of the perpendicular lines must equal -1. Let the unknown slope be m.
(5/4)m = -1
m = -(4/5)
The required equation is of the form:
y = -(4/5)x + b
Plugging in the coordinates of the given point, we get:
5 = -(16/5) + b
b = 8 1/5.
The required equation is therefore:
y = -(4/5)x + 8 1/5
The better buy is 36 pens for $5.76 Because if you divide $5.76 by 36 pens Each pan will cost only $.16 and if you divide $4.32 by 24 pans each pen will cost $.18 so the better buy is the 36 pens.
Answer:
Step-by-step explanation:
For this exercise you need to remember a property called "Associative Property".
The Associative Property states that it does not matter how you group the numbers, because you will always obtained the same result.
For Additiion, the Associentive property states the following:
Where "a", "b" and "c" are Real numbers.
In this case you have:
As you can notice, the number 24 and the number 1 are grouped inside the parentheses, but you can also regroup the numbers 1 and 92 using parentheses and you will have the same result.
Therefore, based on the Associative Property explained before, you can conclude that: