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Savatey [412]
3 years ago
10

6. A cashier has 25 coins consisting of nickels, dimes, and quarters with a value of $4.90. If the

Mathematics
1 answer:
ioda3 years ago
8 0

Answer:

3 nickels & 5 dimes & 17 quarters

Step-by-step explanation:

dimes=d

nickels=n

quarters=q

0.05n + 0.10d + 0.25q=$4.90

d=n x 2 -1

q=25-d-n

q=25-(2n-1)-n=25-2n + 1-n=26-3n

so going back to the first equation

0.05n + 0.10d + 0.25q=$4.90

0.05n + 0.10(2n-1) + 0.25(26-3n)=$4.90

0.05n + 0.20n -0.1 + 6.5 - 0.75n =$4.90

-0.5n+6.4 =$4.90

-0.5n=-1.5

n=3

d=2n-1=2*3-1=5

q=26-3n = 26- 3*3=17

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On which days did it rain less then one-fifth of an inch
nasty-shy [4]

Answer:

on which days did it rain less then one-fifth of an inch

Step-by-step explanation:

3 0
3 years ago
The surface area of a rectangular prism is 2210 cm2. Two of the dimensions are 5 cm and 10 cm. Find the measure of the other dim
Vlad [161]

The surface area of a rectangular prism is 2210 cm^2 Then the other dimension is 70.3 cm

<h3><u>Solution:</u></h3>

Given that surface area of rectangular prism is 2210 square centimeter

Also given that two of dimensions are 5 cm and 10 cm

To find: other dimension

<em><u>The total surface area of the rectangular prism is gievn as:</u></em>

\text {Total surface area }=2(lb+b h+h l)

Where, "l" is the length and "b" is the breadth and "h" is the height

The given values are:  l = 5cm and b = 10cm

On substituting the given values in formula we get,

\begin{array}{l}{2210=2(l \times b+b \times h+h \times l)} \\\\ {2210=2(5 \times 10+10 \times h+h \times 5)} \\\\ {2210=2(50+10 h+5 h)} \\\\ {1105=50+15 h} \\\\ {1055=15 h} \\\\ {h=70.3}\end{array}

Thus the other dimension is 70.3 cm

6 0
4 years ago
What is the minus 60 plus 40 =x plus y= x+9
Schach [20]

60+40=x

y=x+9

MInus

x=100

y=109

Diffrence 9

3 0
3 years ago
Read 2 more answers
There are 32 marbles in a jar. 12 of the marbles are red, and the rest of the marbles are blue. What is the ratio of red marbles
Gnom [1K]

Answer:

12 : 10

Step-by-step explanation:

So if there is 32 marbles and 12 are red 32-12= (the amount of blue marbles)                                                                                                                                                                                                                                                                                                                                          

12:10

7 0
3 years ago
Read 2 more answers
What is the slope of the line described by the data in the table below?
bezimeni [28]

Given:

The table of values is:

x      y

-4     3

0     8

4     13

8     18

To find:

The slope of the line that described by the data in the table.

Solution:

Consider any two points from the given table.

Let the two points are (0,8) and (4,13). So, the slope of the line is

m=\dfrac{y_2-y_1}{x_2-x_1}

m=\dfrac{13-8}{4-0}

m=\dfrac{5}{4}

m=1.25

Therefore, the slope of the line described by the data in the table is 1.25.

6 0
3 years ago
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