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Lyrx [107]
3 years ago
9

Determine the period

Mathematics
1 answer:
mixas84 [53]3 years ago
8 0
The period is 11

Explanation
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For the class of 2013's prom Norman's dress shop sold cheaper dresses for $90 each and more expensive dresses for $140 each. The
Tema [17]

Answer:

Number of cheaper dresses sold  is 35

Number of expensive  dresses sold  is 15

Step-by-step explanation:

Given:

Cost of cheaper dresses = $90

Cost of  expensive dresses = $140

Total cost of  the dresses = $5250

To Find:

Number of cheaper dress = ?

Number of expensive  dress = ?

Solution:

Let

The number of  cheaper dresses be x

The number of  expensive dresses be y

(Number of cheaper dresses X cost of cheap dress) +  (Number of Expensive dresses X cost of  expensive dress)  =  $5250

x \times90 +y \times 140 = 5250=  $5250

It is given that the 20 more of the cheaper dresses than the expensive dresses is sold

So,

number of cheaper dress  =  20  +  number of expensive dress

x = 20 + y---------------------------------------(1)

(20+y) \times90 +y \times 140 = 5250 = 5250

(20 \times 90 +y\times 90) +y \times 140= 5250

1800 + 90y+ 140y = 5250

1800 + 230y = 5250

230y =5250 -1800

230y = 3450

y = \frac{3450}{230}

y = 15

Substituting y in (1)

x = 20 +15

x= 35

5 0
3 years ago
Help meeee i need this right now!!!! <br>2+2÷(<br><img src="https://tex.z-dn.net/?f=%20%5Csqrt%7B72%7D%20" id="TexFormula1" titl
Andre45 [30]

Answer:

\frac{1}{3} \sqrt{2} or 0.471405

Step-by-step explanation:

\frac{(2)(2)}{\sqrt{72} }

8 0
3 years ago
Find the product of the integers:<br> 2(-4) =
swat32

Answer:

The answer is -8

Step-by-step explanation:

2(-4)

2*(-4) = -8

4 0
3 years ago
Line parallel to y=2x has a slope of ?
loris [4]

In order to find the slope of a line parallel to this one, we must be familiar with the slope/intercept form, which is y= mx + b. M would be the slope. Therefore this line has a slope of 2. Parallel lines have the same slope, therefore<em> a line parallel to y=2x has a slope of </em><em>2</em><em>. </em>

7 0
3 years ago
Read 2 more answers
Karen, Trey, and Dante have a total of 75 in their wallets. Karen has 5 more than Trey. Dante has 2 times what Karen has. How mu
Taya2010 [7]

Answer: Karen has 20, Trey has 15, Dante has 40

Step-by-step explanation:

Karen=x+5    Trey=x     Dante=2x+10

            x+x+5+2x+10=75

                 4x+15=75

                   4x=60

                     x=15

5 0
2 years ago
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