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mart [117]
2 years ago
6

Molly works at an electronics store. Her last customer purchased a DVD player for $67.65 and five DVDs for $57.93, including tax

es. If the customer paid her with two $100 bills, how much change should she give him?
Mathematics
1 answer:
ra1l [238]2 years ago
3 0
67.65 + 57.93 = 125.58

200.00 - 125.58 = $74.42 change back
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what transformation occurs(vertically stretched, vertically compressed, reflection, translation, rotation, etc) happens when a f
trasher [3.6K]
<h3>Answer: reflection over x axis</h3>

g(x) = -f(x) is the same as g(x) = -1*f(x)

Since y = f(x), we are really saying g(x) = -1*y. Whatever the y coordinate is on f(x), multiply it by -1. This turns something like y = 2 into y = -2, or something like y = -3 into y = 3, etc etc. Visually this reflects the point over the horizontal x axis. Do this to all points on f(x), and the entire curve reflects over the x axis.

I show an example of y = x^2 turn into y = -x^2 in the attached image below.

8 0
3 years ago
The rectangle shown is enlarged such that each side is multiplied by the value of the width, 2x. Which expression represents the
kykrilka [37]

Answer:

<h2>  The answer is </h2><h2>  D. 8x^2+4xy</h2>

Step-by-step explanation:

We know that the  expression for the perimeter is given as

P=2l+2B

now given that the value of the width is =2x

length= 4x

and the breadth=y

P=4x+2y

let us multiply both the length and the width with 2x we have

P=2x(4x+2y)

P=8x^2+4xy

the answer is

D. 8x^2+4xy

4 0
3 years ago
Given the probability histogram pictured for a discrete random variable X, what is μx?
zubka84 [21]

Answer:

Step-by-step explanation:

x

8 0
3 years ago
Read 2 more answers
This is Math 3. I am confused because of the -2
zhuklara [117]

Answer:

x=5

Step-by-step explanation:

for the work I use a website called symbolab.com and it does all the work and everything for you!

6 0
3 years ago
The perimeter of an equilateral triangle is 63 inches. If the length pf each side is (4x-3), write an equation and find the valu
Nady [450]

Answer:

x = 6

Step-by-step explanation:

Givens

There are 3 sides. All are equal to (4x - 3)

Their sum = 63

Formula

3(4x - 3) = 63

Solution

  • 3(4x - 3) = 63            Divide by 3
  • 12x - 9 = 63               Add 9 to both sides
  • 12x = 63 + 9    
  • 12x = 72                    Divide by 12
  • x = 72/12

x = 6                          Answer  

7 0
2 years ago
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