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LUCKY_DIMON [66]
2 years ago
12

Hector spent $30.45 for 2 DVDs, the sales tax was $2.85, and he didn't have a coupon. Each DVD cost the same amount. How much wo

uld each DVD cost?
Mathematics
1 answer:
Gennadij [26K]2 years ago
6 0

Answer:

13.80 without tax

with tax 15.22

Step-by-step explanation:

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Use what you have learned to solve the following polynomial equation by either completing the square or using the quadratic form
USPshnik [31]
<span>(x^2-4x-6) factors into:</span>
(x -5.1623)     (x+1.1623)
Therefore x = 5.1623 and      x = -1.1623

(4x^2-8x-2) <span>factors into:
(x -2.2247)  *  (x +2.2474)
</span>
Therefore x = 2.2247   and x=  -0.22474


7 0
3 years ago
Which graph shows the solution to the inequality -3x-7 &lt;20?​
ki77a [65]

Answer:

x > -9

Step-by-step explanation:

The solution to the inequality is obtained as follows:

-3x -7 < 20

-3x - 7 + 7 < 20 + 7

-3x < 27

-3x/(-3) > 27/(-3)

x > -9

Notice that when you divide by a negative number, the inequality sign changes.

In the picture attached, the graph of the solution s shown. Notice that -9 is not included in the solution.

4 0
3 years ago
What is the answer to these question?
Natali5045456 [20]

Answer:

2.  y = 7/2 x -2

3.   y = 3/4x-1

Step-by-step explanation:

points (0,-2)  (4,12)

slope = (y2-y1)/(x2-x1)

slope = (12--2)/(4-0)

    = (12+2)/4

   = 14/4 = 7/2

the slope is 7/2 and the y intercept is -2

y = mx+b

y = 7/2 x -2


points (0,-1)  (4,2)

slope = (y2-y1)/(x2-x1)

slope = (2--1)/(4-0)

    = (2+1)/4

   = 3/4

the slope is 3/4 and the y intercept is -1

y = mx+b

y = 3/4x-1

3 0
3 years ago
Hey... what's <br><img src="https://tex.z-dn.net/?f=%28a%20%7B%7D%5E%7B2%7D%20%20-%20b%20%7B%7D%5E%7B2%7D%20%29%20%3D%20" id="Te
kogti [31]

Answer:

(a^{2} - b^{2} ) = (a + b)(a - b)

Step-by-step explanation:

This is the Difference of Squares: (a^{2} - b^{2} ) = (a + b)(a - b).

Hope it helps!

8 0
3 years ago
Read 2 more answers
What is the volume, in cubic meters, of a cube with an edge length of 5 meters?
Lilit [14]
125 cubic meters
V=lwh
125= 5 • 5 • 5
8 0
3 years ago
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