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Semenov [28]
3 years ago
15

Ron has 13 coins with a total value of $2.25. the coins are nickels and quarters. how many of each coin does he have

Mathematics
2 answers:
Nikolay [14]3 years ago
8 0
8 quarters = $2.00
5 nickles = $0.25

Total ... 13 coins = $2.25
alukav5142 [94]3 years ago
5 0
N-nickels, q-<span>quarters

n+q=13=>n=13-q

0.25q+0.05n=2.25
0.25q+0.05(13-q)=2.25
0.25q+0.65-0.05q=2.25
0.20q=2.25-0.65
0.20q=1.6
q=1.6:0.2
q=8
n=13-8
n=5

</span>
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5.75% of x = 28000<br> What is x?
kkurt [141]

Answer:

x = 486956.5217

Step-by-step explanation:

5.75% of x = 28000

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8 0
3 years ago
36x-2 + 34x+2 = 180 solve
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36x+34x=180+2-2

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Step-by-step explanation:

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7 0
2 years ago
Read 2 more answers
The sum of a number and 3 is equal to 5 less than double that number. What is the number?
Ganezh [65]

Answer:

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Which of the following pairs of numbers contains like fractions? A. 5⁄6 and 10⁄12 B. 3⁄2 and 2⁄3 C. 3 1⁄2 and 4 4⁄4 D. 6⁄7 and 1
ElenaW [278]
<h2>Hello!</h2>

The answers are:

A.

\frac{5}{6} and \frac{10}{12}

D.

\frac{6}{7} and 1\frac{5}{7}

<h2>Why?</h2>

To find which of the following pairs of numbers contains like fractions, we must remember that like fractions are the fractions that share the same denominator.

We are given two fractions that are like fractions. Those fractions are:

Option A.

\frac{5}{6} and \frac{10}{12}

We have that:

\frac{10}{12}=\frac{5}{6}

So, we have that the pairs of numbers

\frac{5}{6}

and

\frac{5}{6}

Share the same denominator, which is equal to 6, so, the pairs of numbers contains like fractions.

Option D.

\frac{6}{7} and 1\frac{5}{7}

We have that:

1\frac{5}{7}=1+\frac{5}{7}=\frac{7+5}{7}=\frac{12}{7}

So, we have that the pair of numbers

\frac{6}{7}

and

\frac{12}{7}

Share the same denominator, which is equal to 7, so, the pairs of numbers constains like fractions.

Also, we have that the other given options are not like fractions since both pairs of numbers do not share the same denominator.

The other options are:

\frac{3}{2},\frac{2}{3}

and

3\frac{1}{2},4\frac{4}{4}

We can see that both pairs of numbers do not share the same denominator so, they do not contain like fractions.

Hence, the answers are:

A.

\frac{5}{6} and \frac{10}{12}

D.

\frac{6}{7} and 1\frac{5}{7}

Have a nice day!

3 0
3 years ago
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