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Olegator [25]
3 years ago
7

At a particular music store, CDs are on sale at $12.00 for the first one purchased and $9.00 for each additional disc purchased.

Maria spends $84.00 on CDs. How many CDs has Maria purchased?
A.6
B.7.
C.8
D.9
Mathematics
2 answers:
ddd [48]3 years ago
5 0
D. 9 CD's...................
Romashka [77]3 years ago
3 0
I thivk is letter d. but im not sure.
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$23 marked down by 15%.
DanielleElmas [232]

Answer:

7

Step-by-step explanation:

4 0
3 years ago
y = x2 − 6x + 8 2y + x = 4 The pair of points representing the solution set of this system of equations is
algol [13]
2y + x = 4
x = -2y + 4

y = x^2 - 6x + 8
y = (-2y + 4)^2 - 6(-2y + 4) + 8
y = (-2y + 4)(-2y + 4) + 12y - 24 + 8
y = 4y^2 - 8y - 8y + 16 + 12y - 24 + 8
y = 4y^2 - 4y 
4y^2 - 4y - y = 0
4y^2 - 5y = 0
y(4y - 5) = 0
 
y = 0                x = -2y + 4
                        x = -2(0) + 4
                        x = 4

4y - 5 = 0          x = -2y + 4
4y = 5               x = -2(5/4) + 4
y = 5/4              x = -10/4 + 4
                         x = -10/4 + 16/4
                         x = 6/4 which reduces to 3/2

so u have 2 sets of points that will work....

(4,0) and (3/2,5/4) <===
6 0
3 years ago
6x4? multiplication answer
MrRissso [65]

Answer:

6 x 4 = 24

Step-by-step explanation:

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What is the Square root of 4
Stels [109]
The square root of 4 is 2
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3 years ago
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