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Sophie [7]
4 years ago
15

Susana bought a laptop for $500. It was marked $50 off because it was out of the box and slightlly scratched. She also got 20% s

tudent discount, which was taken off the original price. What was the original peice of the laptop? Write and solve an equation to answer the question
Mathematics
2 answers:
kykrilka [37]4 years ago
5 0
20% of $500 = 100$ so we take off 100.

And we take off $50 because it was out of the box and slightly scratched.

So result is $500 - $100 = $400
$400-$50 = $350

Answer = $350

Equation:
Let’s say
500=X
100=Y
50=Z
And answer = A

A=X-(Y-Z)

I hope this will be helpful
yan [13]4 years ago
4 0

Answer: 500*20%=100-50=50

Step-by-step explanation:

500*20%=100-50=50

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Hat is the center and radius of the circle with equation (x − 5)2 + (y + 3)2 = 16?
fgiga [73]
\bf \textit{equation of a circle}\\\\ 
(x-{{ h}})^2+(y-{{ k}})^2={{ r}}^2
\qquad 
center~~(\stackrel{}{{{ h}}},\stackrel{}{{{ k}}})\qquad \qquad 
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(x-5)^2+(y+3)^2=16\implies [x-\stackrel{h}{5}]^2+[y-(\stackrel{k}{-3})]^2=\stackrel{r~~2}{4}
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4 years ago
Here are 7 numbers.
SIZIF [17.4K]

Answer:

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4 0
3 years ago
Determine the type of correlation that exists in the given data set. Age (years) 23 45 39 74 63 52 59 28 35 11 26 49 IQ 76 82 11
Lyrx [107]

Answer:

B -0.104

Step-by-step explanation:

Step 1: Write the formula for correlation

r =    total xy

√Total x² x Total y²

Step 2: Make a table to calculate all values

Table is attached in the picture below

Step 3 : Solve

Mean of X = Total X/ Total number of X

                  = 507/12

                  = 106.33

Mean of Y = Total Y/ Total number of Y

                  = 1276/ 12  

                  = 42.25

r =    total xy

√Total x² x Total y²

r = -352.05/ √3656.25 x 3122.66698

r = -0.104

-0.104 is negative

This negative correlation means there is an inverse correlation between variables.

6 0
3 years ago
Read 2 more answers
A rectangular garden has length and width as given by the expressions below.
Tom [10]

Answer:

P = -12xy - 56y - 42x + 8

Step-by-step explanation:

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P = 2(4 - 7(3x + 4y)) + 2(3x(-2y))

P = 8 - 14(3x + 4y) + 6x(-2y)

P = 8 - 42x - 56y - 12xy

                              P = -12xy - 56y - 42x + 8

3 0
3 years ago
Read 2 more answers
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Mandarinka [93]
15m is:
25% of 60m
500% of 3m
50% of 30m
1000% of 1.5m
5 0
3 years ago
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