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MAXImum [283]
3 years ago
9

The cost of DVD players has dropped by $20 each year. If a DVD player cost $189 four years ago, how much does it cost today

Mathematics
1 answer:
Karolina [17]3 years ago
4 0
It costs $189-(4×$20) which is $189-$80=$109
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I need the answer now in the comments
RUDIKE [14]
Hypotenuse leg would be right
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2 years ago
1) Has zeros at -2 and 4, both being double roots<br><br> 2) As x→∞, y→−∞
irina1246 [14]
-(x+2)^2(x-4)^2

Not that if x= -2 and x=4 they will look like this in an equation: (x+2) and (x-4)
When (x+2) and (x-4) are set equal to zero and you solve for x, x will equal x= -2 and x=4

If they have double roots, they have a multiplicity of 2 (per root) meaning they will bounce off of the x-axis. Multiplicity can be found by using exponents.

The negative in front flips the function over the x-axis and holds true to the given limit.
3 0
3 years ago
Whats -4 1/5 times 1/3 ?
tamaranim1 [39]

Answer: -7/5

Step-by-step explanation:

-4(1/5)⋅(1/3)

Convert -4(1/5) to an improper fraction.

A mixed number is an addition of its whole and fractional parts.

− (4 +1/5) ⋅(1/3)

 Add 4 and 1/5

-21/5  ⋅ 1/3

Cancel the common factor of 3.

Move the leading negative in − 21 /5 into the numerator.

−21/5 ⋅ 1/3

Factor 3 out of −21.

3 (−7)/5 ⋅ 3 /1

Cancel the common factor.

Rewrite the expression.

−7 /5

5 0
3 years ago
Read 2 more answers
Which function represents the price of any computer after a 10% discount? Let x be the original price and P(x) be the discounted
Liono4ka [1.6K]

Answer:

P(x)=.1x

Step-by-step explanation:

1. convert percent value to decimal

10.00/100=.10

2. plug into equation

P(x)=.1x

7 0
4 years ago
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