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pshichka [43]
4 years ago
12

A man has two more nickels than dimes. He has $1.15 in all. How many coins of each kind does he have?

Mathematics
2 answers:
KATRIN_1 [288]4 years ago
7 0

Answer:

5(x +2) + 10x = 115

Number of nickels = 9 and dimes = 7

Step-by-step explanation:

Let the number of nickels a man has = y

and dimes = x

Then by the statement of the question we can form the equation as

y = x + 2------(1)

(.05)y + (.10)x = 1.15------(2)

By multiplying equation 2 by 100

5y + 10x = 115-----(3)

Now we put the value of y from equation 1 in the equation 3

5(x + 2) + 10x = 115

5x + 10 + 10x = 115

15x + 10 = 115

15x = 105

x = 7

y = 7 + 2 = 9

Number of nickels = 9 and dimes = 7

mario62 [17]4 years ago
4 0

5(x+2) + 10x = $1.15

7 dimes and 9 nickels

70 (7x10) cents and 45 (9x5) cents = 1.15


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The heights the balls hit a fence at 350 ft distance are 65 feet, 38 feet and 30 feet, respectively

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Juan's equation is given as:

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h =

Set d to multiples of 50 from 0 to 400.

So, the table of values of Juan's function is:

d (ft)                   h(ft)

0                          2.5

50                        25

100                      42.5

150                        55

200                      62.5

250                        65

300                      62.5

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See attachment for the graph of Juan's function

<u>Mark</u>

A quadratic function is represented as:

h = ad^2 + bd + c

Using the values on the table of values, we have:

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Using the two other values on the table of values, we have:

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Using a graphing tool, we have:

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See attachment for Mark's graph.

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From the graph, we have the table of values of Barry's function to be:

d (ft)                   h(ft)

0                          2.5

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100                      35

150                       44

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300                      41

350                       30

400                      14

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