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kenny6666 [7]
3 years ago
13

A box of 20 dictionaries costs $84. An individual dictionary costs $5. You need at least 55 dictionaries. Find the price of each

combination of items.
Mathematics
1 answer:
SOVA2 [1]3 years ago
5 0

55/20=2 as qutiont and 15 as remainder

2X84=168

15X5=75

answer=243

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the birth rate in a certain country in 1994 was 14,6 birthd per thousand population. in 2004 the birth rate was 14.32 per thousa
amm1812

Answer:

y(x)=-0.028x+14.6

Step-by-step explanation:

Birth Rate in 1994 =  14.6 births per thousand population.

Birth Rate in 2004 =  14.32 births per thousand population.

A linear equation is of the form: y=mx+c

Where:

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  • y=the birth rate
  • m=Yearly Birth Rate

First, we determine the birth rate per year

m=\dfrac{14.32-14.6}{10-0}\\=\dfrac{-0.28}{10}\\m=-0.028

Therefore, a linear equation that relates y in terms of x is of the form:

y(x)=-0.028x+c

When x=0, y=14.6

14.6=-0.028(0)+c

c=14.6

Therefore, the linear equation that relates y in terms of x is:

y(x)=-0.028x+14.6

4 0
3 years ago
Solve for x and y <br> x+y=a<br> x−y=b <br> PLZ HELP VERY URGENT
antoniya [11.8K]

Answer:

Step-by-step explanation:

x+y=a

a=x+y

x−y=b

b=x−y

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8 0
3 years ago
Order the following from greatest to least 1/4, 0.33, 1/8, 0
schepotkina [342]

Answer: 0.33 , 1/4 , 1/8 , 0

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4 0
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EastWind [94]

Answer:

-27 = x

Step-by-step explanation:

4x+27=3x

Subtract 4x from each side

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Murrr4er [49]

Answer:

23

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because the are la of the square is equal all sides of area

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