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Lady_Fox [76]
4 years ago
5

If Chris has 4 times as many nickels as quarters and they have a combined value of 180 cents, how many of each coin does he have

?
Mathematics
2 answers:
Oduvanchick [21]4 years ago
6 0
82 to coins and quadrilateral
crimeas [40]4 years ago
5 0

1 nickel = 5 cents

1 quarter = 25 cents

Let the number of nickels be = n

Let the number of quarters be = q

As mentioned, Chris has 4 times as many nickels as quarters

so, n=4q ----- (1)

The coins have a combined value of 180 cents, so

5n+25q=180   ----- (2)

Putting n=4q in equation (2)

5(4q)+25q=180

20q+25q=180

45q=180

q=4

Hence, quarters are 4

As, n=4q

n=4\times4=16

Hence, nickels are 16


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dybincka [34]

Answer:

<em>The percentage of the students who completed the poll preferred rock and roll music.</em>

<em>P(RR) = 0.1423 = 14.23 %</em>

Step-by-step explanation:

<u><em>Explanation</em></u>:-

<em>Given total number of students n(S) = 1960</em>

Given the Students at a high school were polled to determine the type of music they preferred.

Rap 916

Alternative 46

<em>Rock and Roll 279</em>

Country 183

Jazz 32

Other 89

<em>Let ' RR' be the event of Rock and Roll preferred music</em>

<em>given </em>Rock and Roll = 279

<em>n( RR) =  279</em>

<em>The percentage of the students who completed the poll preferred rock and roll music.</em>

<em></em>P(RR) = \frac{n(RR)}{n(s)} = \frac{279}{1960}<em></em>

<em>P(RR) = 0.1423 = 14.23 %</em>

<em></em>

<em></em>

8 0
3 years ago
Find the value of x<br> .<br><br> 12.5,−10,−7.5,x<br> ; The mean is 11.5<br> .
fomenos
There are four values, including the unknown value x. The sum of the four values is the given value of the mean, 11.5, multiplied by four. Let S be the sum of the four values. Then we can write:
S=11.5\times4=46

46=12.5 + (-10)+(-7.5)+x
x = 46 + 5 = 51
The answer is: The value of x is 51.

4 0
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The average fish at a fishing tournament was 12.4 pounds. Some of the weight last of the fish are shown on the table:
Ivanshal [37]

Answer:

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Step-by-step explanation:

12.4kg × 5 = 62kg,

= 62kg - (14.6kg + 11.4kg + 10.3kg + 10.2kg)

= 62kg - 46.5kg

= 15.5kg

6 0
3 years ago
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olchik [2.2K]

Answer:A number decreased by 40

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3 years ago
A recipe calls for 24 ounces of chocolate chips. How many pounds is this?
uysha [10]

B

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24 = 16 x 1½

8 0
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