Answer:
Slope = -2.000/2.000 = -1.000
x-intercept = 3/1 = 3.00000
y-intercept = 3/1 = 3.00000
Answers:
A = 3
B = -7
C = 3
D = -7
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Explanation:
You could use the AC method to factor, but I think the method described below is a more efficient way of factoring.
Set the given expression equal to zero and solve for x using the quadratic formula. So the goal is to find the roots for
We'll plug in a = 9, b = -42, and c = 49.
Because the root is x = 7/3, it leads to the factor 3x-7 = 0
Note that we go from x = 7/3 to 3x = 7 after multiplying both sides by 3. Then we subtract 7 from both sides.
It turns out that we have two copies of the identical factor (3x-7) because x = 7/3 is a double root.
So in reality we have the factorization (3x-7)(3x-7) which we can shorten into (3x-7)^2 if we wanted.
Use the box method or FOIL method to expand (3x-7)(3x-7) and you should get 9x^2-21x-21x+49 which simplifies to 9x^2-42x+49. This confirms we have the correct factorization.
Therefore, A and C are both 3, while B and D are both -7.
When doing the median you first place the numbers for least to greatest, then you cross off each side until you get your middle number. If the is two middle numbers then you add the two middle numbers the divide by two. Example:
What is the median for the numbers 12,24,35,2,67,80,45,and 95? First put the numbers from least to greatest. 2,12,24,35,45,67,80,95. ( REMEMBER that if you have an even number of numbers than your going to have two medians, if you have an odd number of numbers than you will have one median!) the middle numbers are 35 and 45, so you add 45+35 which equals 80. 80 divided by 2 is 40. Hope my example helped you understand this! :)
Answer:
$406.25
Step-by-step explanation:
use an interest calculator :)