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nikitadnepr [17]
3 years ago
15

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

d a 20% markdown on the system. Answer part A and then I give you part B.

Mathematics
1 answer:
Charra [1.4K]3 years ago
3 0

Answer:

The answer is 494.40$

Step-by-step explanation:

618*80=49440

49440/100=494.40

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tigry1 [53]

Answer: x=-2

Step-by-step explanation:

3 0
3 years ago
Which fraction do you multiply by to simplify 5/ 4 - 3i ?
Rzqust [24]
So I assume
\frac{5}{4-3i}

If so. Let us begin.

\mathrm{Multiply\:by\:the\:conjugate}\:\frac{4+3i}{4+3i} \ \textgreater \  \frac{5\left(4+3i\right)}{\left(4-3i\right)\left(4+3i\right)} \ \textgreater \  \left(4-3i\right)\left(4+3i\right)

\mathrm{Apply\:complex\:arithmetic\:rule}:\ \left(a+bi\right)\left(a-bi\right)=a^2+b^2
Where\;a=4,\:b=-3 \ \textgreater \  4^2+\left(-3\right)^2 \ \textgreater \  Refine \ \textgreater \  25

\frac{5\left(4+3i\right)}{25} \ \textgreater \  \mathrm{Cancel\:the\:common\:factor:}\:5 \ \textgreater \  \frac{4+3i}{5}

Group\:the\:real\:part\:and\:the\:imaginary\:part\:of\:the\:complex\:number
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Hope this helps!
3 0
3 years ago
Hey can you please help me posted picture of question
Ira Lisetskai [31]
Answer:
40x² + 65x + 25

Explanation:
We will just multiply each term from the first bracket by each term from the second and then combine like terms to get the final expression.

This would be done as follows:
(5x + 5)(8x + 5)
5x(8x) + 5x(5) + 5(8x) + 5(5)
40x² + 25x + 40x + 25
40x² + 65x + 25

Hope this helps :)
6 0
3 years ago
-5/12 - (-9/3) what is the answer for this equation
WINSTONCH [101]

Answer:

2 7/12

Step-by-step explanation:

Simple fraction problem

3 0
1 year ago
In the diagram of PARALLELOGRAM ABCD, segment BE is perpendicular to segment CED, segment DF is perpendicular to BFC and segment
tiny-mole [99]

Answer:

In parallelogram ABCD

FD is perpendicular to BC

BE is perpendicular to CD

Consider triangle BEC and triangle DFC

FC = EC (Given)

Angle BEC = Angle DFC (=90°)

Angle BCE = Angle DCF (common)

Therefore triangle BEC is congruent to triangle DFC (AAS congruency)

DF = BE (CPCT)

Since the altitudes are equal their bases will also be equal

Therefore BC = DC

Therefore BC = DC = AD = AB

Therefore ABCD is a rhombus

Hope this helps!

Mark me as brainliest

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3 years ago
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