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lozanna [386]
3 years ago
12

A computer store buys a computer system at a cost of ​$370.80. The selling price was first at $618 ​, but then the store adverti

sed a 20% markdown on the system.
Mathematics
2 answers:
Vlad [161]3 years ago
7 0

Answer:

$494.40

Step-by-step explanation:

618 x 20% or .2 = $123.60.

$618 - $123.60= $494.40.

Hope this helps!

xxTIMURxx [149]3 years ago
6 0

Answer:

The answer is 494.40 for the first question and then the second answer is 395.52

Step-by-step explanation:

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Solve 5x(x-6)(4x+9)=0
xxTIMURxx [149]
Greetings and Happy Holidays!

Solve 
for x.
5x(x-6)(4x+9)=0<span>

Distribute the parenthesis:
</span>5x(x-6)(4x+9)=0

(5x^2-30x)(4x+9)=0

(20x^3-120x^2)+(45x^2-270x)=0

Combine like terms:
20x^3-75x^2-270x=0

Factor out GCF (5x):
5x(4x^2-15x-54)=0

Factor the Complex Trinomial:
5x(4x^2+9x-24x-54)=0

5x(x(4x+9)-6(4x-9))=0

5x((4x+9)(x-6))=0

Set Factors to Equal 0:
5x=0

x=0

or

4x+9=0

4x=-9

x=\frac{-9}{4}

or

x-6=0

x=6

The Answers Are:
\boxed{x=0} \\ \boxed{x= \frac{-9}{4}} \\ \boxed{x=6}

I hope this helped!
-Benjamin

8 0
2 years ago
Choose the correct description of the graph of the inequality x − 3greater than or equal to 5
Vera_Pavlovna [14]
Not sure what the correct description is but the answer is:
x <span>≥ 8</span>
8 0
3 years ago
What is the sign of the product (3)(-3)(-2)(4)? (5 points) Select one: a. Positive, because the products (3)(-3) and (-2)(4) are
Gnesinka [82]

Answer:  a. Positive, because the products (3)(-3) and (-2)(4) are negative, and the product of two negative numbers is positive

Step-by-step explanation:  It is also possible to rearrange the factors.

(3)(4) = 12  a positive number.

(-3)(-2) = 6, a positive number. Again "a negative times a negative is a positive"  --Jaime Escalante, <em>Stand and Deliver</em>

Now you have two positive numbers: 12×6 = 72

The product is positive either way.

4 0
2 years ago
What is x=15 a a function and please explain the process
Vika [28.1K]
<span>Simplifying 15 + 5x = 0 Solving 15 + 5x = 0 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-15' to each side of the equation. 15 + -15 + 5x = 0 + -15 Combine like terms: 15 + -15 = 0 0 + 5x = 0 + -15 5x = 0 + -15 Combine like terms: 0 + -15 = -15 5x = -15 Divide each side by '5'. x = -3 Simplifying x = -3</span>
5 0
3 years ago
The 6 in the number 6,140 has a value __-- 648. times greater than the 6 in the number
nevsk [136]

Answer:

1,000 because it's in the thousands place

Step-by-step explanation:

6 0
3 years ago
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