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Daniel [21]
3 years ago
13

A newspaper carrier has $5.40 in change. He has six more quarters than dimes but five times as many nickles as quarters. How man

y coins of each type does he have?
Mathematics
1 answer:
BigorU [14]3 years ago
5 0
X= number of dimes
x+6= number of quarters
5(x+6)= number of nickels
$5.40= 540 cents

Add the number of each coin and set it equal to the total in cents.


x + (x + 6) + 5(x + 6)= $5.40
multiply 5 by parentheses; change dollar total to cents

x + (x + 6) + (5 * x) + (5 * 6)= 540

x + (x + 6) + 5x + 30= 540
combine like terms

7x + 36= 540
subtract 36 from both sides

7x= 504
divide both sides by 7

x= 72 dimes

x + 6= 78 quarters

5(x + 6)= 390 nickels


CHECK
72 + 78 + 390= 540
540= 540


ANSWER: There are 72 dimes, 78 quarters and 390 nickels.

Hope this helps! :)
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Answer:

x=2.125

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C=19.125

Step-by-step explanation:

To solve this problem we can use a graphical method, we start first noticing the restrictions x\geq 0 and  y\geq 0, which restricts the solution to be in the positive quadrant. Then we plot the first restriction 8x+10y\leq 17 shown in purple, then we can plot the second one 11x+12y\leq 25 shown in the second plot in green.

The intersection of all three restrictions is plotted in white on the third plot. The intersection points are also marked.

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2 years ago
I don't understand plz help​
Rasek [7]

Answer:

The equation that represent x, the height of the sign is;

2a = 3x

Step-by-step explanation:

Given that the area of the triangular yield is A square feet

and it has a base length of 3 feet.

also the height is represented by x;

b = 3ft \\ h = x

Recall that the area of a triangle can be written as;

a =  \frac{1}{2} bh

substituting the given;

a =  \frac{1}{2}  \times 3 \times x \\   a =  \frac{3}{2} x \\ 2a = 3x

Therefore, the equation that represent x, the height of the sign is;

2a = 3x

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2 years ago
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Please help!! There is a photo of my question
goldfiish [28.3K]

Answer:

0.03A + 0.03B = 800

A + B = 20000

Step-by-step explanation:

Let one part A of the total money invested with 3% interest = $A

Therefore, other part B of the money invested with 5% interest = $B

Interest = Principal amount × Rate of interest × Duration of investment

If the duration is 1 year,

Interest = Principal amount × Rate of interest

Return on part A = A × 0.03

Return on part B = B × 0.05

Total return = $800

So the equations will be,

0.03A + 0.03B = 800 -------(1)

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2 years ago
Help read the instructions ffirst
Nezavi [6.7K]

Answer:

Step-by-step explanation:

Find attached  the first sum.

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When the value of x  is  positive, it moves to right side and when x is negative, it moves left sides 'x unit'

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2 years ago
A football pitch is 97 m long and 42 m wide. Bill walks from one corner to another around the outside. Jane walks diagonally acr
barxatty [35]

The required distance walked by Jane diagonally is 105.7 meters.

Given that,
A football pitch is 97 m long and 42 m wide. Bill walks from one corner to another around the outside. Jane walks diagonally across the pitch. How much further Bill walk is to be determined.


<h3>What is simplification?</h3>

The process in mathematics to operate and interpret the function to make the function or expression simple or more understandable is called simplifying and the process is called simplification.

Here,
Length = 97
Width = 42
Diagonal = \sqrt{97^2+42^2}
Diagonal = 105.7 meters.

Thus, the required distance walked by Jane diagonally is 105.7 meters.

Learn more about simplification here: brainly.com/question/12501526

#SPJ1

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