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Zepler [3.9K]
4 years ago
14

Serious answers Please

Mathematics
1 answer:
Arisa [49]4 years ago
5 0

5/7 = x/210

using cross products

5*210 =7x

divide by 7

5*210/7 =x

150=x

there will be 150 notebooks sold

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Suppose Aji and sunshine have to pay $11 in royalties for each Beatles song and $7 for each Donovan song. How many of each type
andrey2020 [161]

To minimize their royal costs to $200, the number of Donovan songs to include is <u>15</u> and the number of Beatles songs to include is <u>5</u>.

<h3>What are ratios?</h3>

Ratios are numerical relationships between variables that show how much each variable is contained in another.

Ratios are stated in fractions, percentages, or decimals.

<h3>Data and Calculations:</h3>

Total songs to include in the song = 20

The ratio of Donovan and Beatles = 5:1.5

The number of Donovan songs to include = 15 (20/6.5 x 5)

The number of Beatles songs to include = 5 (20/6.5 x 1.5)

Royalty cost per Donovan song = $11

Royalty cost per Beatles song = $7

Total royalty costs for Donovan and Beatles song = $200 ($11 x 15 + $7 x 5)

Thus, the number of Donovan songs to include is <u>15</u> and the number of Beatles songs to include is <u>5</u>.

Learn more about ratios at brainly.com/question/2914376

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<h3>Question Completion:</h3>

Aji and Sunshine want to make a CD of songs from the 1960s to donate to their school library to be broadcast during school picnics. Sunshine's parents were big fans of the 60s singer Donovan, and they named her after his song "Sunshine Superman." Aji's folks were devotees of the Beatles. Aji and Sunshine want their CD to consist entirely of songs by Donovan and the Beatles. Because Sunshine is named after a Donovan song, she wants to include at least as many Donovan songs as Beatles songs. Aji agrees. In return, Sunshine agrees to include at least five Beatles songs. 5 1.5 To provide enough variety to make the mix interesting, they decide to include at least 20 songs altogether.

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2 years ago
A bag contains white marables and red marables,126 in total.the number of white marables is 6 more than 5 times the number of re
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Answer:

126

Step-by-step explanation:

you typed a bag contains white marables and red marables, <u><em>126 in total</em></u>.

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Step-by-step explanation:

8 0
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My question<br>define the following terms.<br>parallel lines<br>please fast​
Thepotemich [5.8K]

Answer:

In geometry, parallel lines are lines in a plane which do not meet; that is, two straight lines in a plane that do not intersect at any point are said to be parallel. Colloquially, curves that do not touch each other or intersect and keep a fixed minimum distance are said to be parallel.

Step-by-step explanation:

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3 years ago
A rectangular field is 100 meters wide and 140meters long. Give the length and width of another rectangular field that has the s
sertanlavr [38]

Answer:

The length of rectangle 2  = 80 m

The width of rectangle 2  = 160 m

Step-by-step explanation:

The width of rectangle 1  = 100 m

The length of rectangle 1  = 140 m

Now the PERIMETER OF A RECTANGLE = 2 (L+B)

So, here the Perimeter of R 1 =  2 ( 100 + 140)  = 2 x 240  = 480 m

Also, AREA OF THE RECTANGLE = LENGTH x WIDTH

So, here the Area of R 1 =  100 x 140  = 14,000  sq m  

Now, in the Rectangle  2:

Let us assume the width of rectangle 2  = x

Assume the length of rectangle 2  = y  

Now,Perimeter of rectangle 2= Perimeter of rectangle 1

⇒ 2 (x + y)  = 480 m ......... (1)

Also, Area of rectangle 2   <  Area of rectangle 1

⇒ x y  < 14,000  .....  (2)

Now, solving both  the equations, we get

(x +y ) = 240  ⇒  y = 240 - x

x y < 14,000

Substituting y = 240 - x in (2), we get:

x (240-x) < 14,000

or, 0< x^2 -240x +14,000

Solving the above equation, we get

x < 140

Now, if we take x  = 80, then y = 160

So, for x = 80, y = 160,

Perimeter = 2 ( 80 + 160) = 240 m

Area = x y  = 80 x 160  = 12,800 < 14,000

Hence, one possible pair of solution for (x,y) =(80,160)

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